79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
#pragma once
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#include <util/util.h>
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#if defined(__USART_BUFFER__) // buffer based i/o
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#else
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#include <util/fifo.h>
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#endif
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#include <stdint.h>
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#include <stdio.h>
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#define USART_5BIT 0x0100
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#define USART_6BIT 0x0200
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#define USART_7BIT 0x0400
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#define USART_8BIT 0x0800
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#define USART_PAR_E 0x1000
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#define USART_PAR_O 0x2000
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#define USART_STOP2 0x4000
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#define USART_MODE_TX (1<<0)
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#define USART_MODE_RX (1<<1)
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typedef struct __io_usart usart_t;
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struct __io_usart
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{
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int (*configure) (usart_t *usart,uint32_t baud,uint32_t config);
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int (*mode_set) (usart_t *usart,uint16_t mode);
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int (*mode_clear) (usart_t *usart,uint16_t mode);
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#if defined(__USART_BUFFER__) // buffer based i/o
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buffer_t tx,
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rx;
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#else // fifo based i/o
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#define usart_fifo_t fifo64_t
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#define usart_fifo_read f64_read
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#define usart_fifo_write f64_write
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usart_fifo_t
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tx,
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rx;
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#endif
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uint8_t driverdata[0];
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};
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usart_t* usart_device_get(int usart);
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int usart_configure (uint8_t usart,uint32_t baud,uint32_t config);
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int usart_options (uint8_t usart,uint8_t options);
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#define usart_tx_str(u,t) usart_tx(u,t,strlen(t))
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#if defined(__USART_BUFFER__)
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int usart_tx (uint8_t usart,void *data,int size);
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int usart_tx_done (uint8_t usart);
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int usart_rx (uint8_t usart,void *data,int size);
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int usart_rx_done (uint8_t usart);
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#else
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int usart_read (uint8_t usart);
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int usart_write (uint8_t usart,int ch);
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int usart_tx (uint8_t usart,char *b,int size);
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#endif |