Steins7
4464156981
Control over most parameters is not needed since they cannot change for the buffer to work as expected. Only the priority should be adjustable
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/** @file usart.h
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* Module handling Universal Synchronous/Asynchronous Receiver/Transmitter
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*
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* The module provides functions to configure the usarts and read/write from/to
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* it
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*/
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#ifndef _USART_H_
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#define _USART_H_
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//--includes--------------------------------------------------------------------
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#include "dma.h"
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#include "stdint.h"
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//--type definitions------------------------------------------------------------
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enum UsartPeriph {
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USART_PERIPH_1,
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USART_PERIPH_2,
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USART_PERIPH_3,
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};
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enum UsartConfig {
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USART_CONFIG_7E1,
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USART_CONFIG_7E2,
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USART_CONFIG_7O1,
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USART_CONFIG_7O2,
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USART_CONFIG_8N1,
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USART_CONFIG_8N2,
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USART_CONFIG_8E1,
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USART_CONFIG_8E2,
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USART_CONFIG_8O1,
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USART_CONFIG_8O2,
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};
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//--functions-------------------------------------------------------------------
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void usart_configure(enum UsartPeriph periph, enum UsartConfig config,
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uint32_t baudrate);
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void usart_reset(enum UsartPeriph periph);
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uint32_t usart_write_byte(enum UsartPeriph periph, uint8_t byte);
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uint32_t usart_read_byte(enum UsartPeriph periph, uint8_t* byte);
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void usart_set_tx_buffer(enum UsartPeriph periph, uint8_t** buffers,
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uint16_t buffer_size, uint8_t buffer_nb, enum DmaConfig priority);
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void usart_set_rx_buffer(enum UsartPeriph periph, uint8_t* buffer,
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uint16_t size, enum DmaConfig priority);
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#endif //_USART_H_
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