105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
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/*
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* Copyright (C) 2014 Infineon Technologies AG. All rights reserved.
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*
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* Infineon Technologies AG (Infineon) is supplying this software for use with
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* Infineon's microcontrollers.
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* This file can be freely distributed within development tools that are
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* supporting such microcontrollers.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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* OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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* INFINEON SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL,
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* OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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*
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*/
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/**
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* @file
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* @date 22 July,2015
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* @version 1.0.1
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*
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* @brief UART demo example
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*
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* Send a periodic message via UART
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* Connect PC_TX to P1.4
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* Connect PC_RX to P1.5
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*
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* History <br>
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*
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* Version 1.0.0 Initial <br>
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* Version 1.0.1 Changed XMC_GPIO_SetMode() to XMC_GPIO_Init() for code clarity reasons <br>
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*/
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#include <xmc_gpio.h>
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#include <xmc_uart.h>
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#define TICKS_PER_SECOND 1000
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#define TICKS_WAIT 1000
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const uint8_t message[] = "Hello world!!\n";
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#define LED1 P1_1
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#define UART_TX P1_5
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#define UART_RX P1_4
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XMC_GPIO_CONFIG_t uart_tx =
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{
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.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2,
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.output_strength = XMC_GPIO_OUTPUT_STRENGTH_MEDIUM
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};
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XMC_GPIO_CONFIG_t uart_rx =
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{
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.mode = XMC_GPIO_MODE_INPUT_TRISTATE
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};
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XMC_GPIO_CONFIG_t led =
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{
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.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL,
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.output_strength = XMC_GPIO_OUTPUT_STRENGTH_MEDIUM
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};
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XMC_UART_CH_CONFIG_t uart_config =
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{
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.data_bits = 8U,
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.stop_bits = 1U,
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.baudrate = 115200U
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};
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void SysTick_Handler(void)
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{
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static uint32_t ticks = 0;
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uint32_t index;
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ticks++;
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if (ticks == TICKS_WAIT)
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{
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XMC_GPIO_ToggleOutput(LED1);
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for (index = 0; index < sizeof(message) - 1; index++)
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{
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XMC_UART_CH_Transmit(XMC_UART0_CH0, message[index]);
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}
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ticks = 0;
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}
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}
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int main(void)
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{
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XMC_UART_CH_Init(XMC_UART0_CH0, &uart_config);
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XMC_UART_CH_SetInputSource(XMC_UART0_CH0, XMC_UART_CH_INPUT_RXD, USIC0_C0_DX0_P1_4);
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XMC_UART_CH_Start(XMC_UART0_CH0);
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XMC_GPIO_Init(UART_TX,&uart_tx);
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XMC_GPIO_Init(UART_RX,&uart_rx);
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XMC_GPIO_Init(LED1,&led);
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/* Send a message via UART periodically */
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SysTick_Config(SystemCoreClock / TICKS_PER_SECOND);
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while(1)
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{
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/* Infinite loop */
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}
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}
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