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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