board.c文件：
#include "board.h"
#include "zf_uart.h"
#include <rtthread.h>
#include "mm32_reg_redefine_v1.h"
extern uint32_t SystemCoreClock;
//finsh组件接收串口数据，是通过在串口中断内发送邮件，finsh线程接收邮件进行获取的
rt_mailbox_t uart_mb;
static uint32_t systick_config(rt_uint32_t ticks)
{
if ((ticks - 1) > 0xFFFFFF)
{
return 1;
}
SysTick->LOAD = ticks - 1;
nvic_init(SysTick_IRQn, 3, ENABLE);
SysTick->VAL = 0;
SysTick->CTRL = 0x07;
return 0;
}
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
#define RT_HEAP_SIZE 700
static uint32_t rt_heap[RT_HEAP_SIZE]; // heap default size: 4K(1024 * 4)
RT_WEAK void *rt_heap_begin_get(void)
{
return rt_heap;
}
RT_WEAK void *rt_heap_end_get(void)
{
return rt_heap + RT_HEAP_SIZE;
}
#endif
void rt_hw_board_init()
{
systick_config(SystemCoreClock / RT_TICK_PER_SECOND);
board_init(1);
/* Call components board initial (use INIT_BOARD_EXPORT()) */
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif
uart_mb = rt_mb_create("uart_mb", 10, RT_IPC_FLAG_FIFO);
}
void SysTick_Handler(void)
{
rt_interrupt_enter();
rt_tick_increase();
rt_interrupt_leave();
}
void rt_hw_console_output(const char *str)
{
while(RT_NULL != *str)
{
if('\n' == *str)
{
uart_putchar(DEBUG_UART, '\r');
}
uart_putchar(DEBUG_UART, *str++);
}
}
char rt_hw_console_getchar(void)
{
uint32 dat;
//等待邮件
rt_mb_recv(uart_mb, &dat, RT_WAITING_FOREVER);
//uart_getchar(DEBUG_UART, &dat);
return (char)dat;
}
//-------------------------------------------------------------------------------------------------------------------
// @brief 核心板初始化
// @param debug_enable 是否开启默认 debug 输出 DEBUG_UART 默认 UART1
// @return void
// Sample usage: board_init(TRUE);
//-------------------------------------------------------------------------------------------------------------------
void board_init (bool debug_enable)
{
if(debug_enable)
{
uart_init(DEBUG_UART, DEBUG_UART_BAUD, DEBUG_UART_TX, DEBUG_UART_RX); // 默认初始化 UART1 用以支持 printf 输出
}
uart_rx_irq(DEBUG_UART, 1);
}
void UART1_IRQHandler(void)
{
uint8 dat;
rt_interrupt_enter();
if(UART1->ISR & UART_ISR_TX_INTF) // 串口发送缓冲空中断
{
UART1->ICR |= UART_ICR_TXICLR; // 清除中断标志位
}
if(UART1->ISR & UART_ISR_RX_INTF) // 串口接收缓冲中断
{
uart_getchar(DEBUG_UART, &dat);
rt_mb_send(uart_mb, dat); // 发送邮件
UART1->ICR |= UART_ICR_RXICLR; // 清除中断标志位
}
rt_interrupt_leave();
}
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