一、FinSH组件的命令执行流程图
二、执行环境
1.芯片：GD32F10x
2.串口：
| #define FINSH_UART?????????????????? | USART1 |
| #define FINSH_UART_CLK???????????? | RCU_USART1 |
| #define FINSH_TX_PIN???????????????? | GPIO_PIN_2 |
| #define FINSH_RX_PIN???????????????? | GPIO_PIN_3 |
| #define FINSH_GPIO_PORT???????????? | GPIOA |
| #define FINSH_GPIO_CLK????????????? | RCU_GPIOA |
3.编译环境：KEIL
4.RT-Thread：RT-Thread Nano（3.1.3版本）
三、添加步骤
1.添加FinSH组件相关文件
1）路径：../rt-thread-3.1.3/components/finsh
2）KEIL中添加文件
2.在rtconfig.h文件中添加宏 #define RT_USING_FINSH
3.配置对应的串口
#define FINSH_UART?????????????????? USART1
#define FINSH_UART_CLK?????????????? RCU_USART1
#define FINSH_TX_PIN???????????????? GPIO_PIN_2
#define FINSH_RX_PIN???????????????? GPIO_PIN_3
#define FINSH_GPIO_PORT????????????? GPIOA
#define FINSH_GPIO_CLK?????????????? RCU_GPIOA
/*初始化FINSH组件对应的串口，同时进行初始化*/
void rt_thread_finsh_uart_init(void)
{
???
??? /* enable GPIO clock */
??? rcu_periph_clock_enable(FINSH_GPIO_CLK);
??? /* enable USART clock */
??? rcu_periph_clock_enable(FINSH_UART_CLK);
??? /* connect port to USARTx_Tx */
??? gpio_init(FINSH_GPIO_PORT, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, FINSH_TX_PIN);
??? /* connect port to USARTx_Rx */
??? gpio_init(FINSH_GPIO_PORT, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, FINSH_RX_PIN);
??? /* USART configure */
??? usart_deinit(FINSH_UART);
??? usart_baudrate_set(FINSH_UART, 115200U);
??? usart_word_length_set(FINSH_UART, USART_WL_8BIT);
??? usart_stop_bit_set(FINSH_UART, USART_STB_1BIT);
??? usart_parity_config(FINSH_UART, USART_PM_NONE);
??? usart_hardware_flow_rts_config(FINSH_UART, USART_RTS_DISABLE);
??? usart_hardware_flow_cts_config(FINSH_UART, USART_CTS_DISABLE);
??? usart_receive_config(FINSH_UART, USART_RECEIVE_ENABLE);
??? usart_transmit_config(FINSH_UART, USART_TRANSMIT_ENABLE);
??? usart_enable(FINSH_UART);
}
4.编写void rt_hw_console_output(const char *str)和rt_hw_console_getchar函数
/* 实现 2：输出一个字符，系统函数，函数名不可更改 */
void rt_hw_console_output(const char *str)
{
rt_enter_critical();//进入临界段
while(*str != '\0')
{
if(*str == '\n')
{
usart_data_transmit(FINSH_UART, (uint8_t)'\r');
while(RESET == usart_flag_get(FINSH_UART, USART_FLAG_TBE));????????????????//等待发送结束
}
usart_data_transmit(FINSH_UART, (uint8_t)*str++);//发送接收到的数据
while(RESET == usart_flag_get(FINSH_UART, USART_FLAG_TBE));????????????????//等待发送结束
}
rt_exit_critical();//退出临界段
}
char rt_hw_console_getchar(void)
{
??? int ch = -1;
if(usart_flag_get(FINSH_UART, USART_FLAG_RBNE) != RESET)????????
??? {
??????? ch = (uint8_t)usart_data_receive(FINSH_UART);
??? }
??? else
??? {
??????? if(usart_flag_get(FINSH_UART, USART_FLAG_RBNE) != RESET)????????
??????? {
?????????? usart_flag_clear(FINSH_UART, USART_FLAG_RBNE);
??????? }
??????? rt_thread_mdelay(10);
??? }
??? return ch;
}
四、完整代码