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application: commit application powering GM1351, reading its measurements, and transmitting over Bluetooth

This commit is contained in:
King Kévin 2020-02-20 11:45:02 +01:00
parent d4fac33b6e
commit b9e64f4913
2 changed files with 73 additions and 4 deletions
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75
application.c
View File

@ -12,7 +12,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/** STM32F1 application example
/** STM32F1 application to read out measurements from GM1351 sound level meter and send the over Bluetooth
* @file
* @author King Kévin <kingkevin@cuvoodoo.info>
* @date 2016-2020
@ -47,6 +47,8 @@
#include "usb_cdcacm.h" // USB CDC ACM utilities
#include "terminal.h" // handle the terminal interface
#include "menu.h" // menu utilities
#include "sensor_gm1351.h" // sound level meter interface
#include "spp_tx.h" // to communicate to the Bluetooth module
/** watchdog period in ms */
#define WATCHDOG_PERIOD 10000
@ -74,6 +76,20 @@ static time_t time_start = 0;
volatile bool rtc_internal_tick_flag = false; /**< flag set when internal RTC ticked */
/** @} */
/** if we show the received value */
static bool gm1351_show = false;
/** show/hide received sound level
* @param[in] argument not used
*/
static void command_show(void* argument)
{
(void)argument; // we won't use the argument
gm1351_show = !gm1351_show; // toggle setting
puts(gm1351_show ? "show" : "hide");
puts(" decoded sound level\n");
}
size_t putc(char c)
{
size_t length = 0; // number of characters printed
@ -128,6 +144,13 @@ static void command_reset(void* argument);
*/
static void command_bootloader(void* argument);
/** switch/toggle power of GM1351 sound level meter */
static void command_power(void* argument)
{
(void)argument; // we won't use the argument
sensor_gm1351_power_toggle(); // toggle power of meter
}
/** list of all supported commands */
static const struct menu_command_t menu_commands[] = {
{
@ -180,6 +203,23 @@ static const struct menu_command_t menu_commands[] = {
.argument_description = NULL,
.command_handler = &command_bootloader,
},
// custom actions
{
.shortcut = 'p',
.name = "power",
.command_description = "switch power of GM1351 sound level meter",
.argument = MENU_ARGUMENT_NONE,
.argument_description = NULL,
.command_handler = &command_power,
},
{
.shortcut = 's',
.name = "show",
.command_description = "show/hide decoded sound level",
.argument = MENU_ARGUMENT_NONE,
.argument_description = NULL,
.command_handler = &command_show,
},
};
static void command_help(void* argument)
@ -341,7 +381,7 @@ void main(void)
uart_setup(); // setup USART (for printing)
#endif
usb_cdcacm_setup(); // setup USB CDC ACM (for printing)
puts("\nwelcome to the CuVoodoo STM32F1 example application\n"); // print welcome message
puts("\nwelcome to the CuVoodoo GM1351 sound level meter reader\n"); // print welcome message
#if DEBUG
// show reset cause
@ -394,6 +434,14 @@ void main(void)
time_start = rtc_get_counter_val(); // get start time from internal RTC
puts("OK\n");
puts("setup UART to Bluetooth SPP module: ");
spp_tx_setup();
puts("OK\n");
puts("setup GM1351 sound level meter: ");
sensor_gm1351_setup();
puts("OK\n");
// setup terminal
terminal_prefix = ""; // set default prefix
terminal_process = &process_command; // set central function to process commands
@ -402,6 +450,7 @@ void main(void)
// start main loop
bool action = false; // if an action has been performed don't go to sleep
button_flag = false; // reset button flag
uint32_t gm1351_last = rtc_get_counter_val(); // last time a measurement has been received
while (true) { // infinite loop
iwdg_reset(); // kick the dog
if (user_input_available) { // user input is available
@ -420,8 +469,28 @@ void main(void)
if (rtc_internal_tick_flag) { // the internal RTC ticked
rtc_internal_tick_flag = false; // reset flag
action = true; // action has been performed
if (0 == (rtc_get_counter_val() % RTC_TICKS_SECOND)) { // one seond has passed
if (0 == (rtc_get_counter_val() % RTC_TICKS_SECOND)) { // one second has passed
led_toggle(); // toggle LED (good to indicate if main function is stuck)
if ((rtc_get_counter_val() - gm1351_last) / RTC_TICKS_SECOND >= 3) { // no measurement has been received for some time
sensor_gm1351_power_toggle(); // toggle power of meter
gm1351_last = rtc_get_counter_val(); // restart the wait
puts("no value received from GM1351. trying to power it on\n");
}
}
}
if (sensor_gm1351_received_flag) { // meter data has been received
action = true; // action has been performed
sensor_gm1351_received_flag = false; // reset flag
led_toggle(); // notify user about activity
gm1351_last = rtc_get_counter_val(); // remember we got a value
char measurement[10 + 1]; // to store the string with the measurement value
snprintf(measurement, LENGTH(measurement), "%u.%u dBa\n", sensor_gm1351_decidba / 10, sensor_gm1351_decidba % 10); // generate string
if (gm1351_show) {
puts(measurement); // display measurement to user
}
// sen measurement to Bluetooth module
for (uint8_t i = 0; i < LENGTH(measurement) && measurement[i] != '\0'; i++) {
spp_tx_putchar_nonblocking( measurement[i]);
}
}
if (action) { // go to sleep if nothing had to be done, else recheck for activity

2
lib/usb_cdcacm.c
View File

@ -242,7 +242,7 @@ static char usb_serial[] = "00112233445566778899aabb";
*/
static const char* usb_strings[] = {
"CuVoodoo", /**< manufacturer string */
"CuVoodoo STM32F1xx firmware", /**< product string */
"CuVoodoo GM1351 sound level meter reade", /**< product string */
(const char*)usb_serial, /**< device ID used as serial number */
"DFU bootloader (runtime mode)", /**< DFU interface string */
};