remove unsused files
This commit is contained in:
parent
017495692c
commit
02c5adc008
|
|
@ -1,111 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to read/write internal flash (code)
|
||||
* @file flash_internal.c
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: none
|
||||
*/
|
||||
/* standard libraries */
|
||||
#include <stdint.h> // standard integer types
|
||||
#include <stdlib.h> // general utilities
|
||||
|
||||
/* STM32 (including CM3) libraries */
|
||||
#include <libopencm3/stm32/desig.h> // device signature utilities
|
||||
#include <libopencm3/stm32/flash.h> // flash utilities
|
||||
|
||||
#include "flash_internal.h" // flash storage library API
|
||||
#include "global.h" // global definitions
|
||||
|
||||
/** the flash page size (medium-density devices have 1KiB page size) */
|
||||
#define PAGE_SIZE 1024
|
||||
|
||||
bool flash_internal_read(uint32_t address, uint8_t *buffer, size_t size)
|
||||
{
|
||||
// verify it's in the storage area
|
||||
if (address<STORAGE_START || (address+size)>STORAGE_END) {
|
||||
return false;
|
||||
}
|
||||
if (buffer==NULL || size==0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// copy data byte per byte
|
||||
// a more efficient way would be to copy words, than the remaining bytes
|
||||
for (size_t i=0; i<size; i++) {
|
||||
buffer[i] = *((uint8_t*)address+i);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool flash_internal_write(uint32_t address, uint8_t *buffer, size_t size)
|
||||
{
|
||||
// verify it's in the storage area
|
||||
if (address<STORAGE_START || (address+size)>STORAGE_END) {
|
||||
return false;
|
||||
}
|
||||
if (buffer==NULL || size==0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
uint8_t page[PAGE_SIZE]; // the complete page to write
|
||||
|
||||
flash_unlock(); // unlock flash to be able to write it
|
||||
// go through memory
|
||||
while (size) {
|
||||
uint32_t page_pre = address%PAGE_SIZE; // the beginning data size in the page
|
||||
address -= page_pre; // go to beginning of the page
|
||||
storage_read(address, &page[0], page_pre); // copy existing data
|
||||
if (size>=PAGE_SIZE-page_pre) { // no need to read tailing page data
|
||||
for (uint16_t i=0; i<PAGE_SIZE-page_pre; i++) { // put buffer in page
|
||||
page[page_pre+i] = buffer[i];
|
||||
}
|
||||
buffer += PAGE_SIZE-page_pre; // adjust remaining buffer
|
||||
size -= PAGE_SIZE-page_pre; // adjust remaining size
|
||||
} else { // need read tailing page data
|
||||
for (uint16_t i=0; i<size; i++) { // put buffer in page
|
||||
page[page_pre+i] = buffer[i];
|
||||
}
|
||||
buffer += size; // adjust remaining buffer
|
||||
storage_read(address+page_pre+size, &page[page_pre+size], PAGE_SIZE-page_pre-size); // read tailing page data
|
||||
size = 0; // adjust remaining size
|
||||
}
|
||||
|
||||
// write page
|
||||
flash_erase_page(address); // erase current page
|
||||
if (flash_get_status_flags()!=FLASH_SR_EOP) { // operation went wrong
|
||||
flash_lock(); // lock back flash to protect it
|
||||
return false;
|
||||
}
|
||||
for (uint16_t i=0; i<PAGE_SIZE/2; i++) { // write whole page
|
||||
flash_program_half_word(address+i*2, *((uint16_t*)page+i));
|
||||
if (flash_get_status_flags()!=FLASH_SR_EOP) { // operation went wrong
|
||||
flash_lock(); // lock back flash to protect it
|
||||
return false;
|
||||
}
|
||||
if (*((uint16_t*)address+i)!=*((uint16_t*)page+i)) { // verify the programmed data is right
|
||||
flash_lock(); // lock back flash to protect it
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
address += PAGE_SIZE; // go to next page
|
||||
|
||||
}
|
||||
flash_lock(); // lock back flash to protect it
|
||||
|
||||
return true;
|
||||
}
|
||||
|
|
@ -1,45 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to read/write internal flash (API)
|
||||
* @file flash_internal.h
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: none
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
#include <libopencm3/stm32/desig.h> // device signature utilities
|
||||
|
||||
/** how much data (in bytes) should we be able to store (be sure it's available and does not overlap the firmware) */
|
||||
#define STORAGE_SIZE 2048
|
||||
/** the end of the flash area where to store data */
|
||||
#define STORAGE_END FLASH_BASE+DESIG_FLASH_SIZE
|
||||
/** the start of the flash area where to store data (be sure it's after the firmware data) */
|
||||
#define STORAGE_START STORAGE_END-STORAGE_SIZE
|
||||
|
||||
/** read data from internal flash
|
||||
* @param[in] address start address of the data to read
|
||||
* @param[out] buffer where to store the read data
|
||||
* @param[in] size how much data to read, in bytes
|
||||
* @return if read succeeded
|
||||
*/
|
||||
bool flash_internal_read(uint32_t address, uint8_t *buffer, size_t size);
|
||||
/** write data to internal flash
|
||||
* @param[in] address start address where to write data to
|
||||
* @param[in] buffer data to be written
|
||||
* @param[in] size how much data to write, in bytes
|
||||
* @return if write succeeded
|
||||
*/
|
||||
bool flash_internal_write(uint32_t address, uint8_t *buffer, size_t size);
|
||||
|
|
@ -1,165 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to drive a WS2812B LED chain (code)
|
||||
* @file led_ws2812b.c
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: SPI @ref led_ws2812b_spi, timer @ref led_ws2812b_timer, DMA @ref led_ws2812b_dma
|
||||
*/
|
||||
|
||||
/* standard libraries */
|
||||
#include <stdint.h> // standard integer types
|
||||
#include <stdlib.h> // general utilities
|
||||
|
||||
/* STM32 (including CM3) libraries */
|
||||
#include <libopencm3/stm32/rcc.h> // real-time control clock library
|
||||
#include <libopencm3/stm32/gpio.h> // general purpose input output library
|
||||
#include <libopencm3/stm32/spi.h> // SPI library
|
||||
#include <libopencm3/stm32/timer.h> // timer library
|
||||
#include <libopencm3/stm32/dma.h> // DMA library
|
||||
#include <libopencm3/cm3/nvic.h> // interrupt handler
|
||||
#include <libopencmsis/core_cm3.h> // Cortex M3 utilities
|
||||
|
||||
#include "led_ws2812b.h" // LED WS2812B library API
|
||||
#include "global.h" // common methods
|
||||
|
||||
/** bit template to encode one byte to be shifted out by SPI to the WS2812B LEDs
|
||||
* @details For each WS2812B bit which needs to be transfered we require to transfer 3 SPI bits.
|
||||
* The first SPI bit is the high start of the WS2812B bit frame.
|
||||
* The second SPI bit determines if the WS2812B bit is a 0 or 1.
|
||||
* The third SPI bit is the last part of the WS2812B bit frame, which is always low.
|
||||
* The binary pattern is 0b100100100100100100100100
|
||||
*/
|
||||
#define LED_WS2812B_SPI_TEMPLATE 0x924924
|
||||
|
||||
uint8_t led_ws2812b_data[LED_WS2812B_LEDS*3*3+40*3/8+1] = {0}; /**< data encoded to be shifted out by SPI for the WS2812B, plus the 50us reset (~40 data bits) */
|
||||
static volatile bool transmit_flag = false; /**< flag set in software when transmission started, clear by interrupt when transmission completed */
|
||||
|
||||
void led_ws2812b_set_rgb(uint16_t led, uint8_t red, uint8_t green, uint8_t blue)
|
||||
{
|
||||
// verify the led exists
|
||||
if (led>=LED_WS2812B_LEDS) {
|
||||
return;
|
||||
}
|
||||
// wait for transmission to complete before changing the color
|
||||
while (transmit_flag) {
|
||||
__WFI();
|
||||
}
|
||||
|
||||
const uint8_t colors[] = {green, red, blue}; // color order for the WS2812B
|
||||
const uint8_t pattern_bit[] = {0x02, 0x10, 0x80, 0x04, 0x20, 0x01, 0x08, 0x40}; // which bit to change in the pattern
|
||||
const uint8_t pattern_byte[] = {2,2,2,1,1,0,0,0}; // in which byte in the pattern to write the pattern bit
|
||||
for (uint8_t color=0; color<LENGTH(colors); color++) { // colors are encoded similarly
|
||||
// fill the middle bit (fixed is faster than calculating it)
|
||||
for (uint8_t bit=0; bit<8; bit++) { // bit from the color to set/clear
|
||||
if (colors[color]&(1<<bit)) { // setting bit
|
||||
led_ws2812b_data[led*3*3+color*3+pattern_byte[bit]] |= pattern_bit[bit]; // setting bit is pattern
|
||||
} else { // clear bit
|
||||
led_ws2812b_data[led*3*3+color*3+pattern_byte[bit]] &= ~pattern_bit[bit]; // clearing bit is pattern
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool led_ws2812b_transmit(void)
|
||||
{
|
||||
if (transmit_flag) { // a transmission is already ongoing
|
||||
return false;
|
||||
}
|
||||
transmit_flag = true; // remember transmission started
|
||||
dma_set_memory_address(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, (uint32_t)led_ws2812b_data);
|
||||
dma_set_number_of_data(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, LENGTH(led_ws2812b_data)); // set the size of the data to transmit
|
||||
dma_enable_transfer_complete_interrupt(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // warm when transfer is complete to stop transmission
|
||||
dma_enable_channel(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // enable DMA channel
|
||||
|
||||
spi_enable_tx_dma(LED_WS2812B_SPI); // use DMA to provide data stream to be transfered
|
||||
|
||||
timer_set_counter(LED_WS2812B_TIMER, 0); // reset timer counter fro clean clock
|
||||
timer_enable_counter(LED_WS2812B_TIMER); // start timer to generate clock
|
||||
return true;
|
||||
}
|
||||
|
||||
void led_ws2812b_setup(void)
|
||||
{
|
||||
// setup timer to generate clock of (using PWM): 800kHz*3
|
||||
rcc_periph_clock_enable(LED_WS2812B_CLK_RCC); // enable clock for GPIO peripheral
|
||||
gpio_set_mode(LED_WS2812B_CLK_PORT, GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, LED_WS2812B_CLK_PIN); // set pin as output
|
||||
rcc_periph_clock_enable(RCC_AFIO); // enable clock for alternate function (PWM)
|
||||
rcc_periph_clock_enable(LED_WS2812B_TIMER_RCC); // enable clock for timer peripheral
|
||||
timer_reset(LED_WS2812B_TIMER); // reset timer state
|
||||
timer_set_mode(LED_WS2812B_TIMER, TIM_CR1_CKD_CK_INT, TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP); // set timer mode, use undivided timer clock, edge alignment (simple count), and count up
|
||||
timer_set_prescaler(LED_WS2812B_TIMER, 0); // no prescaler to keep most precise timer (72MHz/2^16=1099<800kHz)
|
||||
timer_set_period(LED_WS2812B_TIMER, rcc_ahb_frequency/800000/3-1); // set the clock frequency to 800kHz*3bit since we need to send 3 bits to output a 800kbps stream
|
||||
timer_set_oc_value(LED_WS2812B_TIMER, LED_WS2812B_TIMER_OC, rcc_ahb_frequency/800000/3/2); // duty cycle to 50%
|
||||
timer_set_oc_mode(LED_WS2812B_TIMER, LED_WS2812B_TIMER_OC, TIM_OCM_PWM1); // set timer to generate PWM (used as clock)
|
||||
timer_enable_oc_output(LED_WS2812B_TIMER, LED_WS2812B_TIMER_OC); // enable output to generate the clock
|
||||
|
||||
// setup SPI to transmit data (we are slave and the clock comes from the above PWM): 3 SPI bits for 1 WS2812B bit
|
||||
rcc_periph_clock_enable(LED_WS2812B_SPI_PORT_RCC); // enable clock for SPI IO peripheral
|
||||
gpio_set_mode(LED_WS2812B_SPI_PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, LED_WS2812B_SPI_CLK); // set clock as input
|
||||
gpio_set_mode(LED_WS2812B_SPI_PORT, GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, LED_WS2812B_SPI_DOUT); // set MISO as output
|
||||
rcc_periph_clock_enable(RCC_AFIO); // enable clock for SPI alternate function
|
||||
rcc_periph_clock_enable(LED_WS2812B_SPI_RCC); // enable clock for SPI peripheral
|
||||
spi_reset(LED_WS2812B_SPI); // clear SPI values to default
|
||||
spi_set_slave_mode(LED_WS2812B_SPI); // set SPI as slave (since we use the clock as input)
|
||||
spi_set_bidirectional_transmit_only_mode(LED_WS2812B_SPI); // we won't receive data
|
||||
spi_set_unidirectional_mode(LED_WS2812B_SPI); // we only need to transmit data
|
||||
spi_set_dff_8bit(LED_WS2812B_SPI); // use 8 bits for simpler encoding (but there will be more interrupts)
|
||||
spi_set_clock_polarity_1(LED_WS2812B_SPI); // clock is high when idle
|
||||
spi_set_clock_phase_1(LED_WS2812B_SPI); // output data on second edge (rising)
|
||||
spi_send_msb_first(LED_WS2812B_SPI); // send least significant bit first
|
||||
spi_enable_software_slave_management(LED_WS2812B_SPI); // control the slave select in software (since there is no master)
|
||||
spi_set_nss_low(LED_WS2812B_SPI); // set NSS low so we can output
|
||||
spi_enable(LED_WS2812B_SPI); // enable SPI
|
||||
// do not disable SPI or set NSS high since it will put MISO high, breaking the beginning of the next transmission
|
||||
|
||||
// configure DMA to provide the pattern to be shifted out from SPI to the WS2812B LEDs
|
||||
rcc_periph_clock_enable(LED_WS2812B_DMA_RCC); // enable clock for DMA peripheral
|
||||
dma_channel_reset(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // start with fresh channel configuration
|
||||
dma_set_memory_address(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, (uint32_t)led_ws2812b_data); // set bit pattern as source address
|
||||
dma_set_peripheral_address(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, (uint32_t)&LED_WS2812B_SPI_DR); // set SPI as peripheral destination address
|
||||
dma_set_read_from_memory(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // set direction from memory to peripheral
|
||||
dma_enable_memory_increment_mode(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // go through bit pattern
|
||||
dma_set_memory_size(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, DMA_CCR_MSIZE_8BIT); // read 8 bits from memory
|
||||
dma_set_peripheral_size(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, DMA_CCR_PSIZE_8BIT); // write 8 bits to peripheral
|
||||
dma_set_priority(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, DMA_CCR_PL_HIGH); // set priority to high since time is crucial for the peripheral
|
||||
nvic_enable_irq(LED_WS2812B_DMA_IRQ); // enable interrupts for this DMA channel
|
||||
|
||||
// fill buffer with bit pattern
|
||||
for (uint16_t i=0; i<LED_WS2812B_LEDS*3; i++) {
|
||||
led_ws2812b_data[i*3+0] = (uint8_t)(LED_WS2812B_SPI_TEMPLATE>>16);
|
||||
led_ws2812b_data[i*3+1] = (uint8_t)(LED_WS2812B_SPI_TEMPLATE>>8);
|
||||
led_ws2812b_data[i*3+2] = (uint8_t)(LED_WS2812B_SPI_TEMPLATE>>0);
|
||||
}
|
||||
// fill remaining with with 0 to encode the reset code
|
||||
for (uint16_t i=LED_WS2812B_LEDS*3*3; i<LENGTH(led_ws2812b_data); i++) {
|
||||
led_ws2812b_data[i] = 0;
|
||||
}
|
||||
led_ws2812b_transmit(); // set LEDs
|
||||
}
|
||||
|
||||
/** DMA interrupt service routine to stop transmission after it finished */
|
||||
void LED_WS2812B_DMA_ISR(void)
|
||||
{
|
||||
if (dma_get_interrupt_flag(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, DMA_TCIF)) { // transfer completed
|
||||
dma_clear_interrupt_flags(LED_WS2812B_DMA, LED_WS2812B_DMA_CH, DMA_TCIF); // clear flag
|
||||
dma_disable_transfer_complete_interrupt(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // stop warning transfer completed
|
||||
spi_disable_tx_dma(LED_WS2812B_SPI); // stop SPI asking for more data
|
||||
while (SPI_SR(LED_WS2812B_SPI) & SPI_SR_BSY); // wait for data to be shifted out
|
||||
timer_disable_counter(LED_WS2812B_TIMER); // stop clock
|
||||
dma_disable_channel(LED_WS2812B_DMA, LED_WS2812B_DMA_CH); // stop using DMA
|
||||
transmit_flag = false; // transmission completed
|
||||
}
|
||||
}
|
||||
|
|
@ -1,71 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to drive a WS2812B LED chain (API)
|
||||
* @file led_ws2812b.h
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: SPI @ref led_ws2812b_spi, timer @ref led_ws2812b_timer, DMA @ref led_ws2812b_dma
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
/** number of LEDs on the WS2812B strip */
|
||||
#define LED_WS2812B_LEDS 48
|
||||
|
||||
/** peripheral configuration */
|
||||
/** @defgroup led_ws2812b_spi SPI peripheral used to control the WS2812B LEDs
|
||||
* @{
|
||||
*/
|
||||
#define LED_WS2812B_SPI SPI1 /**< SPI peripheral */
|
||||
#define LED_WS2812B_SPI_DR SPI1_DR /**< SPI data register for the DMA */
|
||||
#define LED_WS2812B_SPI_RCC RCC_SPI1 /**< SPI peripheral clock */
|
||||
#define LED_WS2812B_SPI_PORT_RCC RCC_GPIOA /**< SPI I/O peripheral clock */
|
||||
#define LED_WS2812B_SPI_PORT GPIOA /**< SPI port */
|
||||
#define LED_WS2812B_SPI_CLK GPIO_SPI1_SCK /**< SPI clock pin (PA5), connect to PWM output */
|
||||
#define LED_WS2812B_SPI_DOUT GPIO_SPI1_MISO /**< SPI data pin (PA6), connect to WS2812B DIN */
|
||||
/** @} */
|
||||
/** @defgroup led_ws2812b_timer timer peripheral used to generate SPI clock
|
||||
* @{
|
||||
*/
|
||||
#define LED_WS2812B_TIMER TIM3 /**< timer peripheral */
|
||||
#define LED_WS2812B_TIMER_RCC RCC_TIM3 /**< timer peripheral clock */
|
||||
#define LED_WS2812B_TIMER_OC TIM_OC3 /**< timer output compare used to set PWM frequency */
|
||||
#define LED_WS2812B_CLK_RCC RCC_GPIOB /**< timer port peripheral clock */
|
||||
#define LED_WS2812B_CLK_PORT GPIOB /**< timer port */
|
||||
#define LED_WS2812B_CLK_PIN GPIO_TIM3_CH3 /**< timer pin to output PWM (PB0), connect to SPI clock input */
|
||||
/** @} */
|
||||
/** @defgroup led_ws2812b_dma DMA peripheral used to send the data
|
||||
* @{
|
||||
*/
|
||||
#define LED_WS2812B_DMA DMA1 /**< DMA peripheral to put data for WS2812B LED in SPI queue (only DMA1 supports SPI1_TX interrupt) */
|
||||
#define LED_WS2812B_DMA_RCC RCC_DMA1 /**< DMA peripheral clock */
|
||||
#define LED_WS2812B_DMA_CH DMA_CHANNEL3 /**< DMA channel (only DMA1 channel 3 supports SPI1_TX interrupt) */
|
||||
#define LED_WS2812B_DMA_IRQ NVIC_DMA1_CHANNEL3_IRQ /**< DMA channel interrupt signal */
|
||||
#define LED_WS2812B_DMA_ISR dma1_channel3_isr /**< DMA channel interrupt service routine */
|
||||
/** @} */
|
||||
|
||||
/** setup WS2812B LED driver */
|
||||
void led_ws2812b_setup(void);
|
||||
/** set color of a single LED
|
||||
* @param[in] led the LED number to set the color
|
||||
* @param[in] red the red color value to set on the LED
|
||||
* @param[in] green the green color value to set on the LED
|
||||
* @param[in] blue the blue color value to set on the LED
|
||||
* @note transmission needs to be done separately
|
||||
*/
|
||||
void led_ws2812b_set_rgb(uint16_t led, uint8_t red, uint8_t green, uint8_t blue);
|
||||
/** transmit color values to WS2812B LEDs
|
||||
* @return true if transmission started, false if another transmission is already ongoing
|
||||
*/
|
||||
bool led_ws2812b_transmit(void);
|
||||
|
|
@ -1,175 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to send data using ESP8266 WiFi SoC (code)
|
||||
* @file radio_esp8266.c
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: USART @ref radio_esp8266_usart
|
||||
*/
|
||||
|
||||
/* standard libraries */
|
||||
#include <stdint.h> // standard integer types
|
||||
#include <stdlib.h> // general utilities
|
||||
#include <string.h> // string and memory utilities
|
||||
#include <stdio.h> // string utilities
|
||||
|
||||
/* STM32 (including CM3) libraries */
|
||||
#include <libopencm3/stm32/rcc.h> // real-time control clock library
|
||||
#include <libopencm3/stm32/gpio.h> // general purpose input output library
|
||||
#include <libopencm3/stm32/usart.h> // universal synchronous asynchronous receiver transmitter library
|
||||
#include <libopencm3/cm3/nvic.h> // interrupt handler
|
||||
#include <libopencmsis/core_cm3.h> // Cortex M3 utilities
|
||||
|
||||
#include "radio_esp8266.h" // radio header and definitions
|
||||
#include "global.h" // common methods
|
||||
|
||||
/** @defgroup radio_esp8266_usart USART peripheral used for communication with radio
|
||||
* @{
|
||||
*/
|
||||
#define RADIO_ESP8266_USART 2 /**< USART peripheral */
|
||||
/** @} */
|
||||
|
||||
/* input and output buffers and used memory */
|
||||
static uint8_t rx_buffer[24] = {0}; /**< buffer for received data (we only expect AT responses) */
|
||||
static volatile uint16_t rx_used = 0; /**< number of byte in receive buffer */
|
||||
static uint8_t tx_buffer[256] = {0}; /**< buffer for data to transmit */
|
||||
static volatile uint16_t tx_used = 0; /**< number of bytes used in transmit buffer */
|
||||
|
||||
volatile bool radio_esp8266_activity = false;
|
||||
volatile bool radio_esp8266_success = false;
|
||||
|
||||
/** transmit data to radio
|
||||
* @param[in] data data to transmit
|
||||
* @param[in] length length of data to transmit
|
||||
*/
|
||||
static void radio_esp8266_transmit(uint8_t* data, uint8_t length) {
|
||||
while (tx_used || !usart_get_flag(USART(RADIO_ESP8266_USART), USART_SR_TXE)) { // wait until ongoing transmission completed
|
||||
usart_enable_tx_interrupt(USART(RADIO_ESP8266_USART)); // enable transmit interrupt
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // ensure transmit interrupt is disable to prevent index corruption (the ISR should already have done it)
|
||||
radio_esp8266_activity = false; // reset status because of new activity
|
||||
for (tx_used=0; tx_used<length && tx_used<LENGTH(tx_buffer); tx_used++) { // copy data
|
||||
tx_buffer[tx_used] = data[length-1-tx_used]; // put character in buffer (in reverse order)
|
||||
}
|
||||
if (tx_used) {
|
||||
usart_enable_tx_interrupt(USART(RADIO_ESP8266_USART)); // enable interrupt to send bytes
|
||||
}
|
||||
}
|
||||
|
||||
void radio_esp8266_setup(void)
|
||||
{
|
||||
/* enable USART I/O peripheral */
|
||||
rcc_periph_clock_enable(RCC_AFIO); // enable pin alternate function (USART)
|
||||
rcc_periph_clock_enable(USART_PORT_RCC(RADIO_ESP8266_USART)); // enable clock for USART port peripheral
|
||||
rcc_periph_clock_enable(USART_RCC(RADIO_ESP8266_USART)); // enable clock for USART peripheral
|
||||
gpio_set_mode(USART_PORT(RADIO_ESP8266_USART), GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USART_PIN_TX(RADIO_ESP8266_USART)); // setup GPIO pin USART transmit
|
||||
gpio_set_mode(USART_PORT(RADIO_ESP8266_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, USART_PIN_RX(RADIO_ESP8266_USART)); // setup GPIO pin USART receive
|
||||
gpio_set(USART_PORT(RADIO_ESP8266_USART), USART_PIN_RX(RADIO_ESP8266_USART)); // pull up to avoid noise when not connected
|
||||
|
||||
/* setup USART parameters for ESP8266 AT firmware */
|
||||
usart_set_baudrate(USART(RADIO_ESP8266_USART), 115200); // AT firmware 0.51 (SDK 1.5.0) uses 115200 bps
|
||||
usart_set_databits(USART(RADIO_ESP8266_USART), 8);
|
||||
usart_set_stopbits(USART(RADIO_ESP8266_USART), USART_STOPBITS_1);
|
||||
usart_set_mode(USART(RADIO_ESP8266_USART), USART_MODE_TX_RX);
|
||||
usart_set_parity(USART(RADIO_ESP8266_USART), USART_PARITY_NONE);
|
||||
usart_set_flow_control(USART(RADIO_ESP8266_USART), USART_FLOWCONTROL_NONE);
|
||||
|
||||
nvic_enable_irq(USART_IRQ(RADIO_ESP8266_USART)); // enable the USART interrupt
|
||||
usart_enable_rx_interrupt(USART(RADIO_ESP8266_USART)); // enable receive interrupt
|
||||
usart_enable(USART(RADIO_ESP8266_USART)); // enable USART
|
||||
|
||||
/* reset buffer states */
|
||||
rx_used = 0;
|
||||
tx_used = 0;
|
||||
radio_esp8266_activity = false;
|
||||
radio_esp8266_success = false;
|
||||
|
||||
radio_esp8266_transmit((uint8_t*)"AT\r\n",4); // verify if module is present
|
||||
while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
radio_esp8266_transmit((uint8_t*)"AT+RST\r\n",8); // reset module
|
||||
while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
while(rx_used<13 || memcmp((char*)&rx_buffer[rx_used-13], "WIFI GOT IP\r\n", 13)!=0) { // wait to have IP
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
radio_esp8266_transmit((uint8_t*)"ATE0\r\n",6); // disable echoing
|
||||
while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
}
|
||||
|
||||
void radio_esp8266_tcp_open(char* host, uint16_t port)
|
||||
{
|
||||
char command[256] = {0}; // string to create command
|
||||
int length = snprintf(command, LENGTH(command), "AT+CIPSTART=\"TCP\",\"%s\",%u\r\n", host, port); // create AT command to establish a TCP connection
|
||||
if (length>0) {
|
||||
radio_esp8266_transmit((uint8_t*)command, length);
|
||||
}
|
||||
}
|
||||
|
||||
void radio_esp8266_send(uint8_t* data, uint8_t length)
|
||||
{
|
||||
char command[16+1] = {0}; // string to create command
|
||||
int command_length = snprintf(command, LENGTH(command), "AT+CIPSEND=%u\r\n", length); // create AT command to send data
|
||||
if (command_length>0) {
|
||||
radio_esp8266_transmit((uint8_t*)command, command_length); // transmit AT command
|
||||
while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
|
||||
__WFI(); // sleep until something happened
|
||||
}
|
||||
if (!radio_esp8266_success) { // send AT command did not succeed
|
||||
return; // don't transmit data
|
||||
}
|
||||
radio_esp8266_transmit(data, length); // transmit data
|
||||
}
|
||||
}
|
||||
|
||||
void radio_esp8266_close(void)
|
||||
{
|
||||
radio_esp8266_transmit((uint8_t*)"AT+CIPCLOSE\r\n", 13); // send AT command to close established connection
|
||||
}
|
||||
|
||||
/** USART interrupt service routine called when data has been transmitted or received */
|
||||
void USART_ISR(RADIO_ESP8266_USART)(void)
|
||||
{
|
||||
if (usart_get_interrupt_source(USART(RADIO_ESP8266_USART), USART_SR_TXE)) { // data has been transmitted
|
||||
if (tx_used) { // there is still data in the buffer to transmit
|
||||
usart_send(USART(RADIO_ESP8266_USART),tx_buffer[tx_used-1]); // put data in transmit register
|
||||
tx_used--; // update used size
|
||||
} else { // no data in the buffer to transmit
|
||||
usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // disable transmit interrupt
|
||||
}
|
||||
}
|
||||
if (usart_get_interrupt_source(USART(RADIO_ESP8266_USART), USART_SR_RXNE)) { // data has been received
|
||||
while (rx_used>=LENGTH(rx_buffer)) { // if buffer is full
|
||||
memmove(rx_buffer,&rx_buffer[1],LENGTH(rx_buffer)-1); // drop old data to make space (ring buffer are more efficient but harder to handle)
|
||||
rx_used--; // update used buffer information
|
||||
}
|
||||
rx_buffer[rx_used++] = usart_recv(USART(RADIO_ESP8266_USART)); // put character in buffer
|
||||
// if the used send a packet with these strings during the commands detection the AT command response will break (AT commands are hard to handle perfectly)
|
||||
if (rx_used>=4 && memcmp((char*)&rx_buffer[rx_used-4], "OK\r\n", 4)==0) { // OK received
|
||||
radio_esp8266_activity = true; // response received
|
||||
radio_esp8266_success = true; // command succeeded
|
||||
rx_used = 0; // reset buffer
|
||||
} else if (rx_used>=7 && memcmp((char*)&rx_buffer[rx_used-7], "ERROR\r\n", 7)==0) { // ERROR received
|
||||
radio_esp8266_activity = true; // response received
|
||||
radio_esp8266_success = false; // command failed
|
||||
rx_used = 0; // reset buffer
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,47 +0,0 @@
|
|||
/* 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/>.
|
||||
*
|
||||
*/
|
||||
/** library to send data using ESP8266 WiFi SoC (API)
|
||||
* @file radio_esp8266.h
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @note peripherals used: USART @ref radio_esp8266_usart
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
/** a response has been returned by the radio */
|
||||
extern volatile bool radio_esp8266_activity;
|
||||
/** the last command has succeeded */
|
||||
extern volatile bool radio_esp8266_success;
|
||||
|
||||
/** setup peripherals to communicate with radio
|
||||
* @note this is blocking to ensure we are connected to the WiFi network
|
||||
*/
|
||||
void radio_esp8266_setup(void);
|
||||
/** establish TCP connection
|
||||
* @param[in] host host to connect to
|
||||
* @param[in] port TCP port to connect to
|
||||
* @note wait for activity to get success status
|
||||
*/
|
||||
void radio_esp8266_tcp_open(char* host, uint16_t port);
|
||||
/** send data (requires established connection)
|
||||
* @param[in] data data to send
|
||||
* @param[in] length size of data to send
|
||||
* @note wait for activity to get success status
|
||||
*/
|
||||
void radio_esp8266_send(uint8_t* data, uint8_t length);
|
||||
/** close established connection
|
||||
* @note wait for activity to get success status
|
||||
*/
|
||||
void radio_esp8266_close(void);
|
||||
Loading…
Reference in New Issue