75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
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/**
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* \file
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*
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* uart1 write routines
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*
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* \author
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*
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* Anthony "Asterisk" Ambuehl
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "cc2430_sfr.h"
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#include "dev/uart1.h"
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#if UART_ONE_ENABLE
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/*---------------------------------------------------------------------------*/
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/* UART1 initialization */
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void
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uart1_init()
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{
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#ifdef UART1_ALTERNATIVE_1
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PERCFG &= ~U1CFG; /*alternative port 1 = P0.5-2*/
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#ifdef UART1_RTSCTS
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P0SEL |= 0x3C; /*peripheral select for TX and RX, RTS, CTS*/
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#else
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P0SEL |= 0x30; /*peripheral select for TX and RX*/
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P0 &= ~0x08; /*RTS down*/
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#endif
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P0DIR |= 0x18; /*RTS, TX out*/
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P0DIR &= ~0x24; /*CTS, RX in*/
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#else
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PERCFG |= U1CFG; /*alternative port 2 = P1.7-4*/
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#ifdef UART1_RTSCTS
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P1SEL |= 0xF0; /*peripheral select for TX and RX*/
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#else
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P1SEL |= 0xC0; /*peripheral select for TX and RX*/
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P1 &= ~0x20; /*RTS down*/
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#endif
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P1DIR |= 0x60; /*RTS, TX out*/
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P1DIR &= ~0x90; /*CTS, RX in*/
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#endif
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#if UART_ONE_CONF_HIGH_SPEED
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UART_SET_SPEED(1, UART_460_M, UART_460_E);
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#else
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UART_SET_SPEED(1, UART_115_M, UART_115_E);
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#endif
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#ifdef UART1_RTSCTS
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U1UCR = 0x42; /*defaults: 8N1, RTS/CTS, high stop bit*/
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#else
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U1UCR = 0x02; /*defaults: 8N1, no flow control, high stop bit*/
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#endif
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U1CSR = U_MODE | U_RE; /* UART mode, receiver enable */
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/*set priority group of group 3 to highest, so the UART won't miss bytes*/
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IP1 |= IP1_3;
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IP0 |= IP0_3;
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}
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/*---------------------------------------------------------------------------*/
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/* Write one byte over the UART. */
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void
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uart1_writeb(uint8_t byte)
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{
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IRCON2_UTX1IF = 0;
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U1BUF = byte;
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while(!IRCON2_UTX1IF); /* Wait until byte has been transmitted. */
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IRCON2_UTX1IF = 0;
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}
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/*---------------------------------------------------------------------------*/
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#endif
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