07272b7cd6
* Only enable TX by default. * Add some magic for RX handling. When an input handler is registered: * Automatically enable RX-related and interrupts * Automatically lock the SERIAL PD on under all power modes * Automatically enable the UART clock under sleep and deep sleep * Automatically undo all of the above when the input handler becomes NULL * As a result, modules / examples that need UART RX no longer need to clock the UART and manipulate the SERIAL PD. They simply have to specify an input handler * Don't automatically power on the UART whenever the CM3 is active * Before accessing the UART, make sure it is powered and clocked * Avoid falling edge glitches * Fix garbage characters / Explicitly wait for UART TX to complete
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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#include "cc26xx-uart.h"
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#include "ti-lib.h"
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#include <string.h>
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/*---------------------------------------------------------------------------*/
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int
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putchar(int c)
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{
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cc26xx_uart_write_byte(c);
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return c;
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}
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/*---------------------------------------------------------------------------*/
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int
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puts(const char *str)
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{
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int i;
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if(str == NULL) {
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return 0;
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}
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for(i = 0; i < strlen(str); i++) {
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cc26xx_uart_write_byte(str[i]);
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}
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cc26xx_uart_write_byte('\n');
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/*
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* Wait for the line to go out. This is to prevent garbage when used between
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* UART on/off cycles
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*/
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while(cc26xx_uart_busy() == UART_BUSY);
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return i;
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}
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/*---------------------------------------------------------------------------*/
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unsigned int
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dbg_send_bytes(const unsigned char *s, unsigned int len)
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{
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unsigned int i = 0;
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while(s && *s != 0) {
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if(i >= len) {
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break;
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}
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cc26xx_uart_write_byte(*s++);
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i++;
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}
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/*
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* Wait for the buffer to go out. This is to prevent garbage when used
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* between UART on/off cycles
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*/
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while(cc26xx_uart_busy() == UART_BUSY);
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return i;
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}
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/*---------------------------------------------------------------------------*/
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