begriffs open source - cmsis-driver-bare/blob - demo/gpio.c

   1 #include CMSIS_device_header
   2 #include "Driver_GPIO.h"
   3
   4 #include "cmsis_os2.h"
   5
   6 #include "sram_vtor.h"
   7 #include "debounce.h"
   8
   9 extern ARM_DRIVER_GPIO Driver_GPIOA, Driver_GPIOC;
  10 ARM_DRIVER_GPIO *ioa = &Driver_GPIOA, *ioc = &Driver_GPIOC;
  11
  12 // CMSIS RTOS2 error handler
  13 void osRtxErrorNotify(uint32_t code)
  14 {
  15         (void)code;
  16         // Handle RTOS errors
  17         while(1);
  18 }
  19
  20 void control_led_task(void *args)
  21 {
  22         (void)args;
  23
  24         sample_state button_samples;
  25         debounce_init(&button_samples, true, 5);
  26         bool led = true;
  27         ioa->SetOutput(5, led);
  28
  29         while (1)
  30         {
  31                 bool *stable;
  32                 stable = debounce(
  33                         &button_samples, ioc->GetInput(13));
  34                 if (stable && !*stable)
  35                 {
  36                         led = !led;
  37                         ioa->SetOutput(5, led);
  38                 }
  39                 vTaskDelay(pdMS_TO_TICKS(1000));
  40         }
  41 }
  42
  43 int main(void)
  44 {
  45         NVIC_Relocate_VTOR();
  46
  47         SystemCoreClockUpdate();
  48
  49         RCC->AHB1ENR |=
  50                 RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOCEN;
  51         (void)RCC->AHB1ENR;
  52         (void)RCC->AHB1ENR;
  53
  54         ioa->Setup(5, NULL);
  55         ioa->SetDirection(5, ARM_GPIO_OUTPUT);
  56         ioc->Setup(13, NULL);
  57
  58         osKernelInitialize();
  59
  60         const osThreadAttr_t thread_attr = {
  61                 .name = "LED Control",
  62                 .stack_size = 512  // 512 words = 2048 bytes
  63         };
  64         osThreadNew(control_led_task, NULL, &thread_attr);
  65
  66         osKernelStart();
  67
  68         // Should never reach here
  69         while(1);
  70 }