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/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation , either version 3 of the License , or
* ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* You should have received a copy of the GNU General Public License
* along with this program . If not , see < http : //www.gnu.org/licenses/>.
*
*/
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/** CuVoodoo USB cable tester firmware
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* @ file
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* @ author King Kévin < kingkevin @ cuvoodoo . info >
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* @ date 2016 - 2020
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*/
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/* standard libraries */
# include <stdint.h> // standard integer types
# include <stdlib.h> // standard utilities
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# include <string.h> // string utilities
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# include <time.h> // date/time utilities
# include <ctype.h> // utilities to check chars
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/* STM32 (including CM3) libraries */
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# include <libopencmsis/core_cm3.h> // Cortex M3 utilities
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# include <libopencm3/cm3/scb.h> // vector table definition
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# include <libopencm3/cm3/nvic.h> // interrupt utilities
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# include <libopencm3/stm32/gpio.h> // general purpose input output library
# include <libopencm3/stm32/rcc.h> // real-time control clock library
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# include <libopencm3/stm32/exti.h> // external interrupt utilities
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# include <libopencm3/stm32/rtc.h> // real time clock utilities
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# include <libopencm3/stm32/iwdg.h> // independent watchdog utilities
# include <libopencm3/stm32/dbgmcu.h> // debug utilities
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# include <libopencm3/stm32/desig.h> // design utilities
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# include <libopencm3/stm32/flash.h> // flash utilities
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/* own libraries */
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# include "global.h" // board definitions
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# include "print.h" // printing utilities
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# include "usb_cdcacm.h" // USB CDC ACM utilities
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# include "terminal.h" // handle the terminal interface
# include "menu.h" // menu utilities
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# include "usb_cables.h" // USB cables definition
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# include "lcd_hd44780.h" // LCD utilities
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/** watchdog period in ms */
# define WATCHDOG_PERIOD 10000
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/** set to 0 if the RTC is reset when the board is powered on, only indicates the uptime
* set to 1 if VBAT can keep the RTC running when the board is unpowered , indicating the date and time
*/
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# define RTC_DATE_TIME 0
/** number of RTC ticks per second
* @ note use integer divider of oscillator to keep second precision
*/
# define RTC_TICKS_SECOND 4
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/** RTC time when device is started */
static time_t time_start = 0 ;
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/** @defgroup main_flags flag set in interrupts to be processed in main task
* @ {
*/
volatile bool rtc_internal_tick_flag = false ; /**< flag set when internal RTC ticked */
/** @} */
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size_t putc ( char c )
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{
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size_t length = 0 ; // number of characters printed
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static char last_c = 0 ; // to remember on which character we last sent
if ( ' \n ' = = c ) { // send carriage return (CR) + line feed (LF) newline for each LF
if ( ' \r ' ! = last_c ) { // CR has not already been sent
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usb_cdcacm_putchar ( ' \r ' ) ; // send CR over USB
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length + + ; // remember we printed 1 character
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}
}
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usb_cdcacm_putchar ( c ) ; // send byte over USB
length + + ; // remember we printed 1 character
last_c = c ; // remember last character
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return length ; // return number of characters printed
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}
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/** put all pins of all connectors to float */
static void usb_pins_float ( void )
{
usb_cables_connectors_float ( usb_connectors , LENGTH ( usb_connectors ) ) ; // put every pin of every connector in floating mode
}
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/** display available commands
* @ param [ in ] argument no argument required
*/
static void command_help ( void * argument ) ;
/** show software and hardware version
* @ param [ in ] argument no argument required
*/
static void command_version ( void * argument ) ;
/** show uptime
* @ param [ in ] argument no argument required
*/
static void command_uptime ( void * argument ) ;
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# if RTC_DATE_TIME
/** show date and time
* @ param [ in ] argument date and time to set
*/
static void command_datetime ( void * argument ) ;
# endif
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/** reset board
* @ param [ in ] argument no argument required
*/
static void command_reset ( void * argument ) ;
/** switch to DFU bootloader
* @ param [ in ] argument no argument required
*/
static void command_bootloader ( void * argument ) ;
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/** test USB connectors intra-connections
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* @ param [ in ] argument no argument required
*/
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static void command_intra ( void * argument )
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{
( void ) argument ; // we won't use the argument
usb_pins_float ( ) ; // start with all pins in safe floating state
printf ( " = intra-connector check = \n " ) ;
for ( uint8_t connector = 0 ; connector < LENGTH ( usb_connectors ) ; connector + + ) { // test from every connector
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printf ( " - %s - \n " , usb_connectors [ connector ] - > name ) ;
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bool loaded = usb_cables_check_load ( usb_connectors [ connector ] ) ;
if ( loaded ) {
printf ( " there is %s load on the connector \n " , loaded ? " a " : " no " ) ;
}
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usb_cables_check_intra ( usb_connectors [ connector ] , NULL ) ;
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}
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usb_pins_float ( ) ; // put all pins back in safe floating state
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}
/** test USB connectors inter-connections
* @ param [ in ] argument no argument required
*/
static void command_inter ( void * argument )
{
( void ) argument ; // we won't use the argument
usb_pins_float ( ) ; // start with all pins in safe floating state
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// step 1: find which connectors are connected
printf ( " = inter-connector check = \n " ) ;
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usb_cables_check_inter ( usb_connectors , LENGTH ( usb_connectors ) , NULL ) ;
usb_pins_float ( ) ; // put all pins back in safe floating state
}
/** test USB cables
* @ param [ in ] argument no argument required
*/
static void command_cables ( void * argument )
{
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// get cable number
uint8_t cable_i = 0xff ;
if ( argument ) {
cable_i = * ( uint32_t * ) argument ;
if ( cable_i > = LENGTH ( usb_cables ) ) {
printf ( " cable number %u out of range 0-%u \n " , cable_i , LENGTH ( usb_cables ) - 1 ) ;
return ;
}
}
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( void ) argument ; // we won't use the argument
usb_pins_float ( ) ; // start with all pins in safe floating state
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// step 2: check for known cable configuration
printf ( " = cable check = \n " ) ;
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for ( uint8_t cable = 0 ; cable < LENGTH ( usb_cables ) ; cable + + ) { // test every cable
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if ( 0xff = = cable_i | | cable = = cable_i ) {
uint8_t pair_defined , pair_undefined ;
bool result = usb_cables_check_cable ( & usb_cables [ cable ] , & pair_defined , & pair_undefined , false ) ;
printf ( " %02u %s: %s (defined=%u/%u, undefined=%u) \n " , cable , result ? " OK " : " KO " , usb_cables [ cable ] . name , pair_defined , usb_cables [ cable ] . pin_pairs_nb , pair_undefined ) ;
}
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}
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usb_pins_float ( ) ; // put all pins back in safe floating state
}
/** find out which USB cable is connected
* @ param [ in ] argument no argument required
*/
static void command_find ( void * argument )
{
( void ) argument ; // we won't use the argument
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printf ( " = cable finder = \n " ) ;
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usb_pins_float ( ) ; // start with all pins in safe floating state
// figure out which connectors are used
bool connected [ LENGTH ( usb_connectors ) ] ;
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//usb_cables_check_inter(usb_connectors, LENGTH(usb_connectors), connected);
usb_cables_check_ground ( usb_connectors , LENGTH ( usb_connectors ) , connected ) ;
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uint8_t connected_nb = 0 ;
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printf ( " connectors: \n " ) ;
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for ( uint8_t i = 0 ; i < LENGTH ( connected ) ; i + + ) {
if ( connected [ i ] ) {
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printf ( " - %s (%s) \n " , usb_connectors [ i ] - > name , usb_connectors [ i ] - > host ? " host " : " device " ) ;
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connected_nb + + ;
}
}
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// find cable with matching connector set
uint8_t matches = 0 ; // number of cables matching the connector set
bool cable_connectors [ LENGTH ( usb_cables ) ] ; // which cable matches the connector set
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for ( uint8_t cable = 0 ; cable < LENGTH ( usb_cables ) ; cable + + ) {
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cable_connectors [ cable ] = false ; // start with not matching, and test if it matches
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// ensure we have the same number of connections as the cable
if ( usb_cables [ cable ] . connectors_nb ! = connected_nb ) {
continue ;
}
// ensure all the connectors we have are also in the cable
bool match = true ;
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for ( uint8_t i = 0 ; i < LENGTH ( usb_connectors ) & & match ; i + + ) {
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if ( ! connected [ i ] ) {
continue ;
}
bool found = false ;
for ( uint8_t j = 0 ; j < usb_cables [ cable ] . connectors_nb ; j + + ) {
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if ( usb_connectors [ i ] = = usb_cables [ cable ] . connectors [ j ] ) {
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found = true ;
}
}
if ( ! found ) {
match = false ;
}
}
// ensure we also have all the connectors which are in the cable
for ( uint8_t i = 0 ; i < usb_cables [ cable ] . connectors_nb & & match ; i + + ) {
bool found = false ;
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for ( uint8_t j = 0 ; j < LENGTH ( usb_connectors ) ; j + + ) {
if ( ! connected [ j ] ) {
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continue ;
}
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if ( usb_connectors [ j ] = = usb_cables [ cable ] . connectors [ i ] ) {
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found = true ;
}
}
if ( ! found ) {
match = false ;
}
}
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cable_connectors [ cable ] = match ;
if ( match ) {
matches + + ;
}
}
// test how well the pins of the cables with matching connectors match
printf ( " found %u cable(s) with matching connectors%s \n " , matches , matches > 0 ? " : " : " " ) ;
if ( 0 = = matches ) {
return ;
}
matches = 0 ; // number of matching cables
uint8_t cable_score [ LENGTH ( usb_cables ) ] ; // how close the cable matches (0 = perfect match)
for ( uint8_t cable = 0 ; cable < LENGTH ( usb_cables ) ; cable + + ) {
cable_score [ cable ] = 0xff ; // initialise with worst score
if ( ! cable_connectors [ cable ] ) { // skip if the cable connectors do not match
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continue ;
}
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// match cable
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uint8_t pair_defined , pair_undefined ;
bool match = usb_cables_check_cable ( & usb_cables [ cable ] , & pair_defined , & pair_undefined , false ) ;
printf ( " - %s: %s (defined=%u/%u, undefined=%u) \n " , match ? " OK " : " KO " , usb_cables [ cable ] . name , pair_defined , usb_cables [ cable ] . pin_pairs_nb , pair_undefined ) ;
cable_score [ cable ] = usb_cables [ cable ] . pin_pairs_nb - pair_defined + pair_undefined ; // calculate score
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if ( match ) {
matches + + ;
}
}
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printf ( " %u perfect matching cable(s) found \n " , matches ) ;
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// find best matching cable
uint8_t best_score = 0xff ;
for ( uint8_t cable = 0 ; cable < LENGTH ( usb_cables ) ; cable + + ) {
if ( ! cable_connectors [ cable ] ) { // skip if the cable connectors do not match
continue ;
}
if ( cable_score [ cable ] < best_score ) {
best_score = cable_score [ cable ] ;
}
}
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printf ( " %smatching cable(s): \n " , 0 = = best_score ? " " : " closest " ) ;
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for ( uint8_t cable = 0 ; cable < LENGTH ( usb_cables ) ; cable + + ) {
if ( ! cable_connectors [ cable ] ) { // skip if the cable connectors do not match
continue ;
}
if ( cable_score [ cable ] = = best_score ) {
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// print cable connections
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printf ( " - %s \n " , usb_cables [ cable ] . name ) ;
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usb_cables_check_cable ( & usb_cables [ cable ] , NULL , NULL , true ) ;
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// test if there is a load
bool loaded = false ;
for ( uint8_t connector = 0 ; connector < usb_cables [ cable ] . connectors_nb ; connector + + ) {
loaded | = usb_cables_check_load ( usb_cables [ cable ] . connectors [ connector ] ) ;
}
printf ( " there is %s load on the cable \n " , loaded ? " a " : " no " ) ;
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}
}
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usb_pins_float ( ) ; // put all pins back in safe floating state
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}
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/** set or show pin value
* @ param [ in ] argument pin number and level
*/
static void command_pin ( void * argument )
{
char * pin_str = NULL ; // to parse the pin number
char * pin_level = NULL ; // to parse the pin level
const char * delimiter = " " ; // words are separated by spaces
uint8_t pin_nb = 0 ; // parsed pin number
if ( argument ) { // pin number and level might have been provided
pin_str = strtok ( ( char * ) argument , delimiter ) ; // get pin number string
if ( pin_str ) {
pin_nb = strtoul ( pin_str , NULL , 10 ) ; // parse pin number
pin_level = strtok ( NULL , delimiter ) ; // get pin level
}
}
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if ( pin_str & & pin_nb > = LENGTH ( usb_pins ) ) {
printf ( " pin %u out of range 0-%u \n " , pin_nb , LENGTH ( usb_pins ) - 1 ) ;
return ;
}
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// set pin
if ( pin_str & & pin_level ) {
const struct usb_pin_t * usb_pin = & usb_pins [ pin_nb ] ;
switch ( pin_level [ 0 ] ) {
case ' h ' :
gpio_set ( usb_pin - > port , usb_pin - > pin ) ;
gpio_set_mode ( usb_pin - > port , GPIO_MODE_INPUT , GPIO_CNF_INPUT_PULL_UPDOWN , usb_pin - > pin ) ;
break ;
case ' H ' :
gpio_set ( usb_pin - > port , usb_pin - > pin ) ;
gpio_set_mode ( usb_pin - > port , GPIO_MODE_OUTPUT_2_MHZ , GPIO_CNF_OUTPUT_PUSHPULL , usb_pin - > pin ) ;
break ;
case ' l ' :
gpio_clear ( usb_pin - > port , usb_pin - > pin ) ;
gpio_set_mode ( usb_pin - > port , GPIO_MODE_INPUT , GPIO_CNF_INPUT_PULL_UPDOWN , usb_pin - > pin ) ;
break ;
case ' L ' :
gpio_clear ( usb_pin - > port , usb_pin - > pin ) ;
gpio_set_mode ( usb_pin - > port , GPIO_MODE_OUTPUT_2_MHZ , GPIO_CNF_OUTPUT_PUSHPULL , usb_pin - > pin ) ;
break ;
case ' x ' :
default :
gpio_set_mode ( usb_pin - > port , GPIO_MODE_INPUT , GPIO_CNF_INPUT_FLOAT , usb_pin - > pin ) ;
}
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}
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// print pin level
printf ( " pin state (H: out high, L: out low, h in high, l in low, x in floating) and actual level \n " ) ; // output meaning
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uint8_t pin_i = 0 ; // current pin
for ( uint8_t connector = 0 ; connector < LENGTH ( usb_connectors ) ; connector + + ) { // test every connector
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bool connector_print = ( ! pin_str | | ( pin_str & & pin_nb > = pin_i & & pin_nb < pin_i + usb_connectors [ connector ] - > pins_nb ) ) ; // if a pin information will be printed for this connector
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if ( connector_print ) {
printf ( " %s (%s): \n " , usb_connectors [ connector ] - > name , usb_connectors [ connector ] - > host ? " host " : " device " ) ; // print connector name
}
for ( uint8_t pin = 0 ; pin < usb_connectors [ connector ] - > pins_nb ; pin + + ) { // test every pin
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const struct usb_pin_t * usb_pin = & usb_pins [ usb_connectors [ connector ] - > pins [ pin ] ] ; // get pin
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if ( ! pin_str | | pin_nb = = pin_i ) { // show pin state
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printf ( " %03u %s: " , pin_i , usb_pin - > name ) ; // print USB pin number
uint8_t pin_pos = __builtin_ctz ( usb_pin - > pin ) ; // get the pin number (position of the 1 in the 16-bit)
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uint8_t offset = ( pin_pos < 8 ) ? ( pin_pos * 4 ) : ( ( pin_pos - 8 ) * 4 ) ; // get pin offset within port
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uint8_t mode = ( ( ( pin_pos < 8 ) ? GPIO_CRL ( usb_pin - > port ) : GPIO_CRH ( usb_pin - > port ) ) > > ( offset + 0 ) ) & 0x3 ; // get mode from pin for port
uint8_t conf = ( ( ( pin_pos < 8 ) ? GPIO_CRL ( usb_pin - > port ) : GPIO_CRH ( usb_pin - > port ) ) > > ( offset + 2 ) ) & 0x3 ; // get configuration from pin for port
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// show set value
if ( 0 = = mode ) { // pin configured as input
if ( 1 = = conf ) { // pin is in floating configuration
putc ( ' x ' ) ;
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} else if ( 0 = = ( GPIO_ODR ( usb_pin - > port ) & usb_pin - > pin ) ) {
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putc ( ' l ' ) ;
} else {
putc ( ' h ' ) ;
}
} else { // pin configured as output
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if ( 0 = = ( GPIO_ODR ( usb_pin - > port ) & usb_pin - > pin ) ) {
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putc ( ' L ' ) ;
} else {
putc ( ' H ' ) ;
}
}
// show actual value
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if ( gpio_get ( usb_pin - > port , usb_pin - > pin ) ) {
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putc ( 0 = = mode ? ' h ' : ' H ' ) ;
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} else {
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putc ( 0 = = mode ? ' l ' : ' L ' ) ;
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}
putc ( ' \n ' ) ;
}
pin_i + + ; // increase global pin number
} // pin
if ( connector_print ) {
putc ( ' \n ' ) ; // separate connectors for readability
}
} // connector
}
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/** run self test to test board connection to connectors
* @ param [ in ] argument no argument required
*/
static void command_test ( void * argument )
{
( void ) argument ; // we won't use the argument
usb_pins_float ( ) ; // start with all pins in safe floating state
printf ( " = test = \n " ) ;
printf ( " run test to check board connections \n " ) ;
printf ( " press any key to interrupt test \n \n " ) ;
// ensure all pins are floating
printf ( " remove all cables from connectors \n " ) ;
bool float_errors = true ; // to test if all pins are floating
while ( float_errors ) {
float_errors = false ; // restart test
for ( uint8_t connector = 0 ; connector < LENGTH ( usb_connectors ) ; connector + + ) { // test every connector
for ( uint8_t pin = 0 ; pin < usb_connectors [ connector ] - > pins_nb ; pin + + ) { // test every pin
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const struct usb_pin_t * usb_pin = & usb_pins [ usb_connectors [ connector ] - > pins [ pin ] ] ; // get pin
gpio_set_mode ( usb_pin - > port , GPIO_MODE_INPUT , GPIO_CNF_INPUT_PULL_UPDOWN , usb_pin - > pin ) ; // we will test if the input is floating by checking against a pull up and down
gpio_set ( usb_pin - > port , usb_pin - > pin ) ; // pull up
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sleep_us ( 10 ) ; // wait for GPIO/line to settle
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bool high = ( 0 ! = gpio_get ( usb_pin - > port , usb_pin - > pin ) ) ; // test if pin is high
gpio_clear ( usb_pin - > port , usb_pin - > pin ) ; // pull down
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sleep_us ( 10 ) ; // wait for GPIO/line to settle
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bool low = ( 0 = = gpio_get ( usb_pin - > port , usb_pin - > pin ) ) ; // test if pin is low
gpio_set_mode ( usb_pin - > port , GPIO_MODE_INPUT , GPIO_CNF_INPUT_FLOAT , usb_pin - > pin ) ; // put back to floating
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if ( high & & low ) { // pull up and down worked
} else { // pull up or down did not work
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printf ( " %s (%s) %s is not floating \n " , usb_connectors [ connector ] - > name , usb_connectors [ connector ] - > host ? " host " : " device " , usb_pin - > name ) ; // print erroneous pin
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float_errors = true ; // remember there is an error
}
} // pin
} // connector
if ( float_errors ) {
if ( user_input_available ) { // user interruption
goto end ;
}
sleep_ms ( 500 ) ; // wait a bit before retesting
if ( user_input_available ) { // user interruption
goto end ;
}
}
} // float_errors
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printf ( " all pins are floating \n \n " ) ;
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// cables to test
const struct usb_cable_t test_cables [ ] = {
usb_cables [ 9 ] , // A (host) - B 3.0 shielded cable
usb_cables [ 14 ] , // A (device) - B 3.0 shielded cable
usb_cables [ 17 ] , // A (host) - miniB 2.0 shielded cable
usb_cables [ 25 ] , // A (host) - microB 3.0 shielded cable
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usb_cables [ 31 ] , // C (host) shunt
usb_cables [ 32 ] , // C (device) shunt
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} ;
for ( uint8_t cable = 0 ; cable < LENGTH ( test_cables ) ; cable + + ) {
printf ( " connect %s cable to connectors: \n " , test_cables [ cable ] . name ) ;
for ( uint8_t connector = 0 ; connector < test_cables [ cable ] . connectors_nb ; connector + + ) {
printf ( " - %s (%s) \n " , test_cables [ cable ] . connectors [ connector ] - > name , test_cables [ cable ] . connectors [ connector ] - > host ? " host " : " device " ) ;
}
bool cable_ok = false ; // if the cable is connected
while ( ! cable_ok ) { // wait until all pin pairs of cable are connected
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uint8_t defined , undefined ; // pair counting variables
cable_ok = usb_cables_check_cable ( & test_cables [ cable ] , & defined , & undefined , true ) ; // test cable
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if ( ! cable_ok & & defined > 0 ) { // not all pairs are connected
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printf ( " connection issues: defined=%u/%u, undefined=%u \n " , defined , test_cables [ cable ] . pin_pairs_nb , undefined ) ; // show issue summary
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}
if ( ! cable_ok ) {
if ( user_input_available ) { // user interruption
goto end ;
}
sleep_ms ( 500 ) ; // wait a bit before retesting
if ( user_input_available ) { // user interruption
goto end ;
}
}
}
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printf ( " cable connections are OK \n \n " ) ;
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}
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printf ( " all connectors are OK, the board is fine \n " ) ;
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end :
usb_pins_float ( ) ; // put pins back to safe state
if ( user_input_available ) {
printf ( " test interrupted \n " ) ;
while ( user_input_available ) { // test has been interrupted
user_input_get ( ) ; // discard input
}
}
}
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/** list of all supported commands */
static const struct menu_command_t menu_commands [ ] = {
{
. shortcut = ' h ' ,
. name = " help " ,
. command_description = " display help " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_help ,
} ,
{
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. shortcut = ' V ' ,
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. name = " version " ,
. command_description = " show software and hardware version " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_version ,
} ,
{
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. shortcut = ' U ' ,
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. name = " uptime " ,
. command_description = " show uptime " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_uptime ,
} ,
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# if RTC_DATE_TIME
{
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. shortcut = ' D ' ,
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. name = " date " ,
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. command_description = " show/set date and time " ,
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. argument = MENU_ARGUMENT_STRING ,
. argument_description = " [YYYY-MM-DD HH:MM:SS] " ,
. command_handler = & command_datetime ,
} ,
# endif
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{
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. shortcut = ' R ' ,
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. name = " reset " ,
. command_description = " reset board " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_reset ,
} ,
{
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. shortcut = ' B ' ,
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. name = " bootloader " ,
. command_description = " reboot into DFU bootloader " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_bootloader ,
} ,
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{
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. shortcut = ' a ' ,
. name = " intra " ,
. command_description = " test connector intra-connection " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_intra ,
} ,
{
. shortcut = ' e ' ,
. name = " inter " ,
. command_description = " test connector inter-connection " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_inter ,
} ,
{
. shortcut = ' c ' ,
. name = " cables " ,
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. command_description = " test cable(s) " ,
. argument = MENU_ARGUMENT_UNSIGNED ,
. argument_description = " [nb] " ,
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. command_handler = & command_cables ,
} ,
{
. shortcut = ' f ' ,
. name = " find " ,
. command_description = " find cable " ,
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. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
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. command_handler = & command_find ,
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} ,
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{
. shortcut = ' p ' ,
. name = " pin " ,
. command_description = " set/show pin level " ,
. argument = MENU_ARGUMENT_STRING ,
. argument_description = " [nb] [H/L/h/l/x] " ,
. command_handler = & command_pin ,
} ,
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{
. shortcut = ' t ' ,
. name = " test " ,
. command_description = " run board test " ,
. argument = MENU_ARGUMENT_NONE ,
. argument_description = NULL ,
. command_handler = & command_test ,
} ,
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} ;
static void command_help ( void * argument )
{
( void ) argument ; // we won't use the argument
printf ( " available commands: \n " ) ;
menu_print_commands ( menu_commands , LENGTH ( menu_commands ) ) ; // print global commands
}
static void command_version ( void * argument )
{
( void ) argument ; // we won't use the argument
printf ( " firmware date: %04u-%02u-%02u \n " , BUILD_YEAR , BUILD_MONTH , BUILD_DAY ) ; // show firmware build date
// get device identifier (DEV_ID)
// 0x412: low-density, 16-32 kB flash
// 0x410: medium-density, 64-128 kB flash
// 0x414: high-density, 256-512 kB flash
// 0x430: XL-density, 768-1024 kB flash
// 0x418: connectivity
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puts ( " device family: " ) ;
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switch ( DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK ) {
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case 0 : // this is a known issue document in STM32F10xxC/D/E Errata sheet, without workaround
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puts ( " unreadable \n " ) ;
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break ;
case 0x412 :
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puts ( " low-density \n " ) ;
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break ;
case 0x410 :
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puts ( " medium-density \n " ) ;
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break ;
case 0x414 :
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puts ( " high-density \n " ) ;
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break ;
case 0x430 :
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puts ( " XL-density \n " ) ;
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break ;
case 0x418 :
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puts ( " connectivity \n " ) ;
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break ;
default :
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puts ( " unknown \n " ) ;
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break ;
}
// show flash size
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puts ( " flash size: " ) ;
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if ( 0xffff = = DESIG_FLASH_SIZE ) {
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puts ( " unknown (probably a defective micro-controller \n " ) ;
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} else {
printf ( " %u KB \n " , DESIG_FLASH_SIZE ) ;
}
// display device identity
printf ( " device id: %08x%08x%08x \n " , DESIG_UNIQUE_ID0 , DESIG_UNIQUE_ID1 , DESIG_UNIQUE_ID2 ) ;
}
static void command_uptime ( void * argument )
{
( void ) argument ; // we won't use the argument
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uint32_t uptime = ( rtc_get_counter_val ( ) - time_start ) / RTC_TICKS_SECOND ; // get time from internal RTC
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printf ( " uptime: %u.%02u:%02u:%02u \n " , uptime / ( 24 * 60 * 60 ) , ( uptime / ( 60 * 60 ) ) % 24 , ( uptime / 60 ) % 60 , uptime % 60 ) ;
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}
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# if RTC_DATE_TIME
static void command_datetime ( void * argument )
{
char * datetime = ( char * ) argument ; // argument is optional date time
if ( NULL = = argument ) { // no date and time provided, just show the current day and time
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time_t time_rtc = rtc_get_counter_val ( ) / RTC_TICKS_SECOND ; // get time from internal RTC
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struct tm * time_tm = localtime ( & time_rtc ) ; // convert time
printf ( " date: %d-%02d-%02d %02d:%02d:%02d \n " , 1900 + time_tm - > tm_year , time_tm - > tm_mon , time_tm - > tm_mday , time_tm - > tm_hour , time_tm - > tm_min , time_tm - > tm_sec ) ;
} else { // date and time provided, set it
const char * malformed = " date and time malformed, expecting YYYY-MM-DD HH:MM:SS \n " ;
struct tm time_tm ; // to store the parsed date time
if ( strlen ( datetime ) ! = ( 4 + 1 + 2 + 1 + 2 ) + 1 + ( 2 + 1 + 2 + 1 + 2 ) ) { // verify date/time is long enough
printf ( malformed ) ;
return ;
}
if ( ! ( isdigit ( ( int8_t ) datetime [ 0 ] ) & & isdigit ( ( int8_t ) datetime [ 1 ] ) & & isdigit ( ( int8_t ) datetime [ 2 ] ) & & isdigit ( ( int8_t ) datetime [ 3 ] ) & & ' - ' = = datetime [ 4 ] & & isdigit ( ( int8_t ) datetime [ 5 ] ) & & isdigit ( ( int8_t ) datetime [ 6 ] ) & & ' - ' = = datetime [ 7 ] & & isdigit ( ( int8_t ) datetime [ 8 ] ) & & isdigit ( ( int8_t ) datetime [ 9 ] ) & & ' ' = = datetime [ 10 ] & & isdigit ( ( int8_t ) datetime [ 11 ] ) & & isdigit ( ( int8_t ) datetime [ 12 ] ) & & ' : ' = = datetime [ 13 ] & & isdigit ( ( int8_t ) datetime [ 14 ] ) & & isdigit ( ( int8_t ) datetime [ 15 ] ) & & ' : ' = = datetime [ 16 ] & & isdigit ( ( int8_t ) datetime [ 17 ] ) & & isdigit ( ( int8_t ) datetime [ 18 ] ) ) ) { // verify format (good enough to not fail parsing)
printf ( malformed ) ;
return ;
}
time_tm . tm_year = strtol ( & datetime [ 0 ] , NULL , 10 ) - 1900 ; // parse year
time_tm . tm_mon = strtol ( & datetime [ 5 ] , NULL , 10 ) ; // parse month
time_tm . tm_mday = strtol ( & datetime [ 8 ] , NULL , 10 ) ; // parse day
time_tm . tm_hour = strtol ( & datetime [ 11 ] , NULL , 10 ) ; // parse hour
time_tm . tm_min = strtol ( & datetime [ 14 ] , NULL , 10 ) ; // parse minutes
time_tm . tm_sec = strtol ( & datetime [ 17 ] , NULL , 10 ) ; // parse seconds
time_t time_rtc = mktime ( & time_tm ) ; // get back seconds
2020-02-17 18:08:17 +01:00
time_start = time_rtc * RTC_TICKS_SECOND + ( rtc_get_counter_val ( ) - time_start ) ; // update uptime with current date
rtc_set_counter_val ( time_rtc * RTC_TICKS_SECOND ) ; // save date/time to internal RTC
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printf ( " date and time saved: %d-%02d-%02d %02d:%02d:%02d \n " , 1900 + time_tm . tm_year , time_tm . tm_mon , time_tm . tm_mday , time_tm . tm_hour , time_tm . tm_min , time_tm . tm_sec ) ;
}
}
# endif
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static void command_reset ( void * argument )
{
( void ) argument ; // we won't use the argument
scb_reset_system ( ) ; // reset device
while ( true ) ; // wait for the reset to happen
}
static void command_bootloader ( void * argument )
{
( void ) argument ; // we won't use the argument
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// set DFU magic to specific RAM location
__dfu_magic [ 0 ] = ' D ' ;
__dfu_magic [ 1 ] = ' F ' ;
__dfu_magic [ 2 ] = ' U ' ;
__dfu_magic [ 3 ] = ' ! ' ;
scb_reset_system ( ) ; // reset system (core and peripherals)
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while ( true ) ; // wait for the reset to happen
}
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/** process user command
* @ param [ in ] str user command string ( \ 0 ended )
*/
static void process_command ( char * str )
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{
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// ensure actions are available
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if ( NULL = = menu_commands | | 0 = = LENGTH ( menu_commands ) ) {
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return ;
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}
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// don't handle empty lines
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if ( ! str | | 0 = = strlen ( str ) ) {
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return ;
}
bool command_handled = false ;
if ( ! command_handled ) {
command_handled = menu_handle_command ( str , menu_commands , LENGTH ( menu_commands ) ) ; // try if this is not a global command
}
if ( ! command_handled ) {
printf ( " command not recognized. enter help to list commands \n " ) ;
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}
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}
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/** program entry point
* this is the firmware function started by the micro - controller
*/
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void main ( void ) ;
void main ( void )
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{
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rcc_clock_setup_in_hse_8mhz_out_72mhz ( ) ; // use 8 MHz high speed external clock to generate 72 MHz internal clock
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2016-10-23 17:42:27 +02:00
# if DEBUG
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// enable functionalities for easier debug
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DBGMCU_CR | = DBGMCU_CR_IWDG_STOP ; // stop independent watchdog counter when code is halted
DBGMCU_CR | = DBGMCU_CR_WWDG_STOP ; // stop window watchdog counter when code is halted
DBGMCU_CR | = DBGMCU_CR_STANDBY ; // allow debug also in standby mode (keep digital part and clock powered)
DBGMCU_CR | = DBGMCU_CR_STOP ; // allow debug also in stop mode (keep clock powered)
DBGMCU_CR | = DBGMCU_CR_SLEEP ; // allow debug also in sleep mode (keep clock powered)
2017-02-06 17:40:28 +01:00
# else
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// setup watchdog to reset in case we get stuck (i.e. when an error occurred)
iwdg_set_period_ms ( WATCHDOG_PERIOD ) ; // set independent watchdog period
iwdg_start ( ) ; // start independent watchdog
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# endif
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board_setup ( ) ; // setup board
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usb_cdcacm_setup ( ) ; // setup USB CDC ACM (for printing)
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printf ( " \n welcome to the CuVoodoo USB cable tester \n " ) ; // print welcome message
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2019-12-21 19:26:27 +01:00
# if DEBUG
// show reset cause
if ( RCC_CSR & ( RCC_CSR_LPWRRSTF | RCC_CSR_WWDGRSTF | RCC_CSR_IWDGRSTF | RCC_CSR_SFTRSTF | RCC_CSR_PORRSTF | RCC_CSR_PINRSTF ) ) {
puts ( " reset cause(s): " ) ;
if ( RCC_CSR & RCC_CSR_LPWRRSTF ) {
puts ( " low-power " ) ;
}
if ( RCC_CSR & RCC_CSR_WWDGRSTF ) {
puts ( " window-watchdog " ) ;
}
if ( RCC_CSR & RCC_CSR_IWDGRSTF ) {
puts ( " independent-watchdog " ) ;
}
if ( RCC_CSR & RCC_CSR_SFTRSTF ) {
puts ( " software " ) ;
}
if ( RCC_CSR & RCC_CSR_PORRSTF ) {
puts ( " POR/PDR " ) ;
}
if ( RCC_CSR & RCC_CSR_PINRSTF ) {
puts ( " pin " ) ;
}
putc ( ' \n ' ) ;
RCC_CSR | = RCC_CSR_RMVF ; // clear reset flags
}
# endif
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# if !(DEBUG)
// show watchdog information
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printf ( " setup watchdog: %.2fs " , WATCHDOG_PERIOD / 1000.0 ) ;
if ( FLASH_OBR & FLASH_OBR_OPTERR ) {
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puts ( " (option bytes not set in flash: software wachtdog used, not automatically started at reset) \n " ) ;
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} else if ( FLASH_OBR & FLASH_OBR_WDG_SW ) {
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puts ( " (software watchdog used, not automatically started at reset) \n " ) ;
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} else {
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puts ( " (hardware watchdog used, automatically started at reset) \n " ) ;
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}
# endif
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// setup RTC
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rtc_auto_awake ( RCC_HSE , 8000000 / 128 / RTC_TICKS_SECOND - 1 ) ; // use High Speed External oscillator (8 MHz / 128) as RTC clock (VBAT can't be used to keep the RTC running)
2019-11-19 18:46:13 +01:00
rtc_auto_awake ( RCC_HSE , 8000000 / 128 - 1 ) ; // use High Speed External oscillator (8 MHz / 128) as RTC clock (VBAT can't be used to keep the RTC running)
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rtc_interrupt_enable ( RTC_SEC ) ; // enable RTC interrupt on "seconds"
nvic_enable_irq ( NVIC_RTC_IRQ ) ; // allow the RTC to interrupt
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time_start = rtc_get_counter_val ( ) ; // get start time from internal RTC
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// setup LCD display
printf ( " setup LCD: " ) ;
led_on ( ) ; // this actually power the I²C backpack and display
lcd_hd44780_i2c_addr = 0x3f ;
if ( lcd_hd44780_setup ( true , false ) ) {
lcd_hd44780_display_control ( true , false , true ) ;
lcd_hd44780_write_line ( false , " USB cable tester " , 16 ) ;
lcd_hd44780_write_line ( true , " testing ... " , 11 ) ;
printf ( " OK " ) ;
} else {
printf ( " KO " ) ;
}
putc ( ' \n ' ) ;
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// setup USB connectors
gpio_primary_remap ( AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON , 0 ) ; // only use SWD and reuse JTAG pins
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rcc_periph_clock_enable ( RCC_GPIOA ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOB ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOC ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOD ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOE ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOF ) ; // enable clock to all GPIO port domains since we use them all
rcc_periph_clock_enable ( RCC_GPIOG ) ; // enable clock to all GPIO port domains since we use them all
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usb_pins_float ( ) ; // pull all pins to floating
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// setup terminal
terminal_prefix = " " ; // set default prefix
terminal_process = & process_command ; // set central function to process commands
terminal_setup ( ) ; // start terminal
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// start main loop
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bool action = false ; // if an action has been performed don't go to sleep
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while ( true ) { // infinite loop
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iwdg_reset ( ) ; // kick the dog
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if ( user_input_available ) { // user input is available
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action = true ; // action has been performed
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//led_toggle(); // toggle LED
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char c = user_input_get ( ) ; // store receive character
terminal_send ( c ) ; // send received character to terminal
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}
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if ( rtc_internal_tick_flag ) { // the internal RTC ticked
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rtc_internal_tick_flag = false ; // reset flag
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action = true ; // action has been performed
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//led_toggle(); // toggle LED (good to indicate if main function is stuck)
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}
if ( action ) { // go to sleep if nothing had to be done, else recheck for activity
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action = false ;
} else {
__WFI ( ) ; // go to sleep
}
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} // main loop
2016-01-17 14:54:54 +01:00
}
2016-01-29 11:25:30 +01:00
2016-08-14 21:02:38 +02:00
/** @brief interrupt service routine called when tick passed on RTC */
void rtc_isr ( void )
{
rtc_clear_flag ( RTC_SEC ) ; // clear flag
rtc_internal_tick_flag = true ; // notify to show new time
}