2026-08-26 07:26:58 +08:00
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#ifndef __USART_H__
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#define __USART_H__
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#include "at32f403a_407.h"
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/* USART2 / UART4 环形队列接口 */
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/* 发送数据 */
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void USART2_SendData(uint8_t *data, uint16_t len);
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void USART4_SendData(uint8_t *data, uint16_t len);
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2026-09-09 07:03:52 +08:00
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/* 等待 UART4 发送环形缓冲排空（供关机 ACK 等场景） */
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void USART4_WaitTxIdle(uint32_t timeout_ms);
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2026-08-26 07:26:58 +08:00
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/* 接收出队：返回 1=取到数据，0=队列空 */
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uint8_t USART2_RxPop(uint8_t *c);
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uint8_t UART4_RxPop(uint8_t *c);
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/* 初始化（关联串口外设，由 wk_usart2_init / wk_uart4_init 调用） */
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void uart_ring_usart2_init(void);
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void uart_ring_uart4_init(void);
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#endif /* __USART_H__ */
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