main.c

/// @file main.c
/*
 * Filename:            main.c
 * Description:         This file is the entry point for program execution.
 * Author:              M. Malyska
 */
#include "stm32f1xx.h"
#include "spi.h"
#include "rcc.h"
#include "gpio.h"
#include "timer.h"
#include "protocol.h"

void command_handler(uint16_t rx_data);
void fill_data(void);

/**
 * After the startup code finishes it will call this function, here is the entry point for user code exeution.
 */
void main(void)
{
  sys_init();
  rcc_init();
  gpio_init();
  spi1_init();
  timer_init();
  protocol_init();

  fill_data();
  comm_hal_frequency_set(0x5e);
  comm_hal_datarate_set(4800U);

  comm_hal_hdrmode(0x00);

  while(1){
    if(comm_int_handler_pending){
      comm_int_handler();
      comm_int_handler_pending = 0x00;
    }
    #ifdef COMM_RX_ENABLED
      if(comm_rx_pending){
        command_handler(protocol_command_get());
        comm_rx_pending = 0x00;
      }
    #endif
    if(send_flag){
      protocol_frame_send();
      send_flag = 0;
    }
  }
}

void EXTI0_IRQHandler(void){
  comm_int_handler_pending = 0xff;
  EXTI->PR |= EXTI_PR_PR0;
}

#ifdef COMM_RX_ENABLED
  enum command_table{nop = 0x00, led_toggle = 0x03, error = 0xff};
  void command_handler(uint16_t rx_data){
    uint8_t value = rx_data; //drop high byte
    switch((rx_data >> 8)){
      case nop:{
        asm("nop"); //Erst mal 'ne Runde nichts machen! (For testing purpose)
      }
      case led_toggle:{
        if(GPIO_LED->ODR & GPIO_ODR_ODR13_Msk){
          GPIO_LED->BSRR |= GPIO_BSRR_BR_LEDRED_Msk;
        }
        else{
          GPIO_LED->BSRR |= GPIO_BSRR_BS_LEDRED_Msk;
        }
        break;
      }
      case error:{
        asm("nop");//error
      }
      default:{
        break;
      }
    }
  }
#endif

void fill_data(void){
  uint8_t status_data[40] = {
    0x03, 0x1e, 0x50, 0x32, 0x37, 0x34, 0x30, 0x33,
    0x38, 0x37, 0x1a, 0x00, 0x00, 0x03, 0x00, 0x00,
    0x15, 0x00, 0x00, 0x5d, 0x00, 0x07, 0x32, 0x20,
    0xc9, 0x66, 0xb5, 0x41, 0x00, 0x00, 0x40, 0x40,
    0xff, 0xff, 0xff, 0xc6, 0xff, 0xff, 0xff, 0xc6
  };
  protocol_field_write(&protocol_f_status, status_data);
  uint8_t meas_data[42] = {
    0xcf, 0x52, 0x02, 0x2a, 0x00, 0x02, 0x9c, 0xe7,
    0x02, 0x27, 0x8d, 0x08, 0xaf, 0x87, 0x07, 0x47,
    0x91, 0x08, 0xcb, 0x2b, 0x02, 0x2b, 0x00, 0x02,
    0x9d, 0xe7, 0x02, 0x09, 0x67, 0x05, 0xee, 0xa6,
    0x04, 0xfe, 0xae, 0x06, 0x00, 0x00, 0xfb, 0xfb,
    0x00, 0x00
  };
  protocol_field_write(&protocol_f_meas, meas_data);
  uint8_t gpsinfo_data[30] = {
    0xe6, 0x07, 0x18, 0xfb, 0x25, 0x12, 0x01, 0xfb,
    0x11, 0xf9, 0x13, 0xf3, 0x0b, 0xfa, 0x09, 0x92,
    0x16, 0xf7, 0x12, 0xf7, 0x03, 0xfa, 0x17, 0xfa,
    0x1f, 0xf4, 0x0e, 0xf4, 0x0c, 0x91
  };
  protocol_field_write(&protocol_f_gpsinfo, gpsinfo_data);
  uint8_t gpsraw_data[89] = {
    0x25, 0xfc, 0x35, 0x01, 0xff, 0x3d, 0xfd, 0xd3,
    0x02, 0x42, 0xbf, 0x00, 0xc6, 0x8f, 0x52, 0x0b,
    0x81, 0xfe, 0xff, 0x80, 0xb5, 0xe9, 0x10, 0xd8,
    0x82, 0xff, 0x37, 0xc1, 0x54, 0x0a, 0x2c, 0x31,
    0x01, 0xac, 0xe5, 0x46, 0x1a, 0x51, 0x15, 0xff,
    0xda, 0x73, 0x7e, 0x02, 0xd3, 0x6f, 0x00, 0x15,
    0x66, 0x6e, 0x0c, 0x53, 0x39, 0x01, 0x21, 0x00,
    0x00, 0x00, 0x77, 0x03, 0x00, 0x8a, 0x56, 0x41,
    0x0f, 0x5e, 0x55, 0xff, 0x93, 0x7c, 0x1c, 0x12,
    0x8b, 0xde, 0xff, 0x30, 0xbd, 0x00, 0x11, 0xb8,
    0xfc, 0x00, 0xac, 0xa8, 0xbe, 0x1d, 0xb4, 0xe3,
    0xff
  };
  protocol_field_write(&protocol_f_gpsraw, gpsraw_data);
  uint8_t gpspos_data[21] = {
    0x08, 0xea, 0xb4, 0x17, 0x96, 0xb0, 0xf1, 0x03,
    0xf6, 0x5d, 0x6d, 0x1d, 0x4c, 0xfd, 0x8f, 0xf5,
    0x37, 0x00, 0x0d, 0x01, 0x0c
  };
  protocol_field_write(&protocol_f_gpspos, gpspos_data);
  uint8_t empty_data[17] = {
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00
  };
  protocol_field_write(&protocol_f_empty, empty_data);
}