add proper shutdown
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ab38b741ac
commit
bee5a1a827
74
main.c
74
main.c
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@ -65,14 +65,17 @@ volatile uint16_t standby_timer = 0; /**< number of seconds since last wake-up/a
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#define FRAME_RATE 25 /**< frame rate */
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volatile uint8_t frame_count = 0; /**< number of frames passed */
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#define MUX_EN_PORT B
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#define MUX_EN_PIN 9
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#define MUX_S0_PORT B
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#define MUX_S0_PIN 3
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#define MUX_S1_PORT B
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#define MUX_S1_PIN 4
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#define MUX_S2_PORT B
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#define MUX_S2_PIN 5
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#define MUX_EN_PORT B /**< port to enable multiplexer */
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#define MUX_EN_PIN 9 /**< pin to enable multiplexer */
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#define MUX_S0_PORT B /**< port to select multiplexer output */
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#define MUX_S0_PIN 3 /**< pin to select multiplexer output */
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#define MUX_S1_PORT B /**< port to select multiplexer output */
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#define MUX_S1_PIN 4 /**< pin to select multiplexer output */
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#define MUX_S2_PORT B /**< port to select multiplexer output */
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#define MUX_S2_PIN 5 /**< pin to select multiplexer output */
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#define POWER_PORT B /**< port to control power of all devices (including this micro-controller) */
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#define POWER_PIN 8 /**< pin to control power of all devices (including this micro-controller) */
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/** user input command */
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static char command[32] = {0};
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@ -243,6 +246,11 @@ 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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// keep power on a soon as possible
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rcc_periph_clock_enable(RCC_GPIO(POWER_PORT)); // enable clock for GPIO
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gpio_set_mode(GPIO(POWER_PORT), GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO(POWER_PIN)); // set as output to control power
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gpio_set(GPIO(POWER_PORT), GPIO(POWER_PIN)); // enable power by saturating nMOS controlling power
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#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
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@ -260,7 +268,7 @@ void main(void)
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usart_setup(); // setup USART for user communication
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cdcacm_setup(); // setup USB ACM (serial) for user communication
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gpio_primary_remap(AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON,0); // disable JTAG (but leave SWD on) since we need most of the GPIOs
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printf("welcome to the STM32F1 CuVoodoo clapperboard\n"); // print welcome message
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printf("welcome to the CuVoodoo clapperboard\n"); // print welcome message
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#if !(DEBUG)
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// show watchdog information
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@ -274,13 +282,6 @@ void main(void)
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}
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#endif
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// enable wake up
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rcc_periph_clock_enable(RCC_PWR); // enable power domain clock
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if (pwr_get_wakeup_flag()) {
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printf("woke up from standby\n");
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}
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pwr_enable_wakeup_pin();
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// disable internal RTC
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printf("disable internal RTC: ");
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rcc_periph_clock_enable(RCC_PWR); // enable power domain clock
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@ -337,10 +338,7 @@ void main(void)
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for (uint8_t tm1637=0; tm1637<7; tm1637++) {
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mux_select(tm1637);
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if (!led_tm1637_time(88,88)) { // test TM1637 display
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printf("could not send time to TM1637 %u\n", tm1637);
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}
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if (!led_tm1637_on()) { // switch on TM1637 display
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printf("could not switch on TM1637 %u\n", tm1637);
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printf("could not test TM1637 %u\n", tm1637);
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}
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}
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led_max7219_setup(2); // setup MAX7219
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@ -351,9 +349,6 @@ void main(void)
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}
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for (uint8_t tm1637=0; tm1637<7; tm1637++) {
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mux_select(tm1637);
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if (!led_tm1637_text(" ")) { // clear display
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printf("could not clear on TM1637 %u\n", tm1637);
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}
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if (!led_tm1637_off()) { // switch off display
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printf("could not switch off TM1637 %u\n", tm1637);
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}
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@ -435,29 +430,41 @@ void main(void)
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while (frame_flag) { // a frame has passed
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frame_flag = false; // reset flag
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action = true; // action has been performed
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uint8_t dots = 0x40; // dot for minutes on display
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char time[] = "00000000"; // time to display
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time[0] += (rtc_ds1307_time[2]/10)%10; // display hours
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time[1] += (rtc_ds1307_time[2])%10; // display hours
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time[1] |= 0x80; // dot for minutes on display
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time[2] += (rtc_ds1307_time[1]/10)%10; // display minutes
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time[3] += (rtc_ds1307_time[1])%10; // display minutes
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if (0==(rtc_seconds%2)) { // even seconds
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dots |= 0x10; // add dot for seconds
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time[3] |= 0x80; // add dot for seconds
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}
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time[4] += (rtc_seconds/10)%10; // display seconds
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time[5] += (rtc_seconds)%10; // display seconds
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if (0==(frame_count%2)) { // even frames
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dots |= 0x04; // add dot for frame
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time[5] |= 0x80; // add dot for frame
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}
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led_max7219_number(rtc_ds1307_time[2]*1000000+rtc_ds1307_time[1]*10000+rtc_seconds*100+(frame_count%100), dots, 0); // display frame time on 1nd display
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time[6] += (frame_count/10)%10; // display frame
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time[7] += (frame_count)%10; // display frame
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led_max7219_text(time, 0); // display frame time on 1st display
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}
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while (rtc_tick_flag) { // the external RTC ticked
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rtc_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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/*
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if (standby_timer>=STANDBY_TIMEOUT) { // standby timeout complete
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// go into standby mode
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printf("standing by\n");
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led_max7219_off(0xff); // switch displays off
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pwr_clear_wakeup_flag(); // clear flag
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printf("shutting down\n");
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led_max7219_off(0xff); // switch off MAX7219 displays
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for (uint8_t tm1637=0; tm1637<7; tm1637++) { // switch off TM1637 displays
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mux_select(tm1637); // selecting TM1637 display
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led_tm1637_off(); // switch off TM1637 display
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}
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gpio_clear(GPIO(POWER_PORT), GPIO(POWER_PIN)); // switch power of by disconnecting from battery
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SCB_SCR |= SCB_SCR_SLEEPDEEP; // enable deep sleep
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pwr_set_standby_mode(); // go to deep sleep
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while (true); // we should be shut down at this point
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}
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*/
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if (rtc_seconds>=60) { // one minute passed
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rtc_ds1307_time = rtc_ds1307_read_time(); // get time/date from external RTC
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if (rtc_ds1307_time==NULL) {
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@ -475,9 +482,6 @@ void main(void)
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if (!led_tm1637_time(rtc_ds1307_time[1],rtc_seconds+tm1637)) { // test TM1637 display
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printf("could not send time to TM1637 %u\n", tm1637);
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}
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if (!led_tm1637_on()) { // switch on TM1637 display
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printf("could not switch on TM1637 %u\n", tm1637);
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}
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}
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}
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while (pwr_get_wakeup_flag()) { // someone is moving the clapperboard
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