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40 lines
1.0 KiB
40 lines
1.0 KiB
6 years ago
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//
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// Created by MightyPork on 2018/01/02.
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//
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// USART driver using DMA buffers.
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// Provides a wide range of config options and supports driving a RS485 driver.
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//
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// The implementation is complex and split to multiple files for easier maintenance
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//
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#ifndef GEX_F072_UNIT_USART_H
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#define GEX_F072_UNIT_USART_H
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#include "unit.h"
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extern const UnitDriver UNIT_USART;
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/**
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* Write bytes. This function is asynchronous and does not wait for completion.
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* It blocks until there's space in the Tx buffer for the data.
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*
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* @param unit
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* @param buffer - bytes to send
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* @param len - number of bytes to send
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* @return success
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*/
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error_t UU_USART_Write(Unit *unit, const uint8_t *buffer, uint32_t len);
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/**
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* Write bytes. Same like UU_USART_Write(), except it waits for the transmission
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* to complete after sending the last data.
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*
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* @param unit
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* @param buffer - bytes to send
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* @param len - number of bytes to send
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* @return success
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*/
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error_t UU_USART_WriteSync(Unit *unit, const uint8_t *buffer, uint32_t len);
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#endif //GEX_F072_UNIT_USART_H
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