module_universal_io/fw/user/main.c

#include "at32f403a_407.h"
#include "at32f403a_407_board.h"
#include "at32f403a_407_clock.h"
#include "common_config.h"
//#include "at32_emac.h"
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"
#include "usb_eth.h"
#include <stdio.h>
#include <stdbool.h>
#include <string.h>



void init_task(void *argument);

void usb_clock48m_select(usb_clk48_s clk_s);

//
int main(void)
{
    nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
  
    system_clock_config();

    at32_board_init();
    
    usb_clock48m_select(USB_CLK_HEXT);
    
    crm_periph_clock_enable(CRM_USB_PERIPH_CLOCK, TRUE);
    
    uart_print_init(115200);
    
    printf("\n\n\n\nMetrolog M3 [FW %s] loading....\r\n\n", VERSION);    
        
    //
    //usb_init();
    
/*    
    taskENTER_CRITICAL();     
    
    xTaskCreate(init_task, "init_task", 10*configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL);
    
    taskEXIT_CRITICAL();
    
    vTaskStartScheduler();
*/    
    while (1) {}
}


void init_task(void *argument)
{
    static uint32_t cnt = 0;
    printf("\n\n\n\nMetrolog M3 [FW %s] loading....\r\n\n", VERSION);    
        
    //
    usb_eth_init();
    
/*    
    for (;;)
    {
        printf("%u\r\n", cnt++);
        vTaskDelay(1000);
    }
*/    
    

// -----------------------------------------------------------------------------              
    vTaskDelete(NULL);
    taskYIELD();
}


//
void usb_clock48m_select(usb_clk48_s clk_s)
{
if(clk_s == USB_CLK_HICK)
  {
    crm_usb_clock_source_select(CRM_USB_CLOCK_SOURCE_HICK);

    /* enable the acc calibration ready interrupt */
    crm_periph_clock_enable(CRM_ACC_PERIPH_CLOCK, TRUE);

    /* update the c1\c2\c3 value */
    acc_write_c1(7980);
    acc_write_c2(8000);
    acc_write_c3(8020);

    /* open acc calibration */
    acc_calibration_mode_enable(ACC_CAL_HICKTRIM, TRUE);
  }
  else
  {
    switch(system_core_clock)
    {
      /* 48MHz */
      case 48000000:
        crm_usb_clock_div_set(CRM_USB_DIV_1);
        break;

      /* 72MHz */
      case 72000000:
        crm_usb_clock_div_set(CRM_USB_DIV_1_5);
        break;

      /* 96MHz */
      case 96000000:
        crm_usb_clock_div_set(CRM_USB_DIV_2);
        break;

      /* 120MHz */
      case 120000000:
        crm_usb_clock_div_set(CRM_USB_DIV_2_5);
        break;

      /* 144MHz */
      case 144000000:
        crm_usb_clock_div_set(CRM_USB_DIV_3);
        break;

      /* 168MHz */
      case 168000000:
        crm_usb_clock_div_set(CRM_USB_DIV_3_5);
        break;

      /* 192MHz */
      case 192000000:
        crm_usb_clock_div_set(CRM_USB_DIV_4);
        break;

      default:
        break;

    }
  }
}