MSP432 UART printf to PC
マルチビットを読み込むのは、以前できていたので、今度は文字列をＰＣの送付する。
こちらはコードを書くというより、printfを使えるようにする。
https://43oh.com/2015/05/how-to-add-printf-support-for-the-msp432-launchpad-serial-port/
の通り。
手順
【前準備】
https://github.com/bluehash/MSP432Launchpad
に行って、[↓CODE]のボタンをクリックしてDownLoad zipを選択してファイルをダウンロード。ZIPを解凍する。
必要なのは
printfOverride.c
というファイルで、これをCCSのプロジェクトにドラッグ、コピーするか、移動してくるか？聞かれるがコピー。
準備はこれで終わり。
【使い方】
普通のc言語でprintfを使うので
#include <stdio.h>
をインクルードしておく。UARTなどの設定は、これまで通り。
ダウンロードしたフォルダーに例があるように普通にprintfが使える。
printf("\r\nPrintf support for the launchpad\r\n");
printf("Decimal(10) :%d\r\n", 10);
printf("Hex(10) :%x\r\n", 10);
printf("float :%f\r\n", 4.32);
以下は例。スイッチを押すとコンソールに、０から９までカウントアップしていき表示する例。
/* --COPYRIGHT--,BSD
* Copyright (c) 2017, Texas Instruments Incorporated
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* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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/******************************************************************************
* MSP432 Empty Project
*
* Description: An empty project that uses DriverLib
*
* MSP432P401
* ------------------
* /|\| |
* | | |
* --|RST |
* | P1.1|Switch
* | |
* | |
* | |
* | |
* Author:
*******************************************************************************/
/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>
/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>//printf
/* UART Configuration Parameter. These are the configuration parameters to
* make the eUSCI A UART module to operate with a 9600 baud rate. These
* values were calculated using the online calculator that TI provides
* at:
*http://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/MSP430BaudRateConverter/index.html
*/
const eUSCI_UART_ConfigV1 uartConfig =
{
EUSCI_A_UART_CLOCKSOURCE_SMCLK, // SMCLK Clock Source
78, // BRDIV = 78
2, // UCxBRF = 2
0, // UCxBRS = 0
EUSCI_A_UART_NO_PARITY, // No Parity
EUSCI_A_UART_LSB_FIRST, // LSB First
EUSCI_A_UART_ONE_STOP_BIT, // One stop bit
EUSCI_A_UART_MODE, // UART mode
EUSCI_A_UART_OVERSAMPLING_BAUDRATE_GENERATION, // Oversampling
EUSCI_A_UART_8_BIT_LEN // 8 bit data length
};
int main(void)
{
/* Stop Watchdog */
MAP_WDT_A_holdTimer();
/* PIN setting*/
MAP_GPIO_setAsInputPinWithPullUpResistor(GPIO_PORT_P1, GPIO_PIN1);
/* Setting DCO to 12MHz */
CS_setDCOCenteredFrequency(CS_DCO_FREQUENCY_12);
/* Selecting P1.2 and P1.3 in UART mode */
MAP_GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P1,
GPIO_PIN2 | GPIO_PIN3, GPIO_PRIMARY_MODULE_FUNCTION);
/* Configuring UART Module */
MAP_UART_initModule(EUSCI_A0_BASE, &uartConfig);
/* Enable UART module */
MAP_UART_enableModule(EUSCI_A0_BASE);
/* Enabling interrupts */
MAP_UART_enableInterrupt(EUSCI_A0_BASE, EUSCI_A_UART_RECEIVE_INTERRUPT);
MAP_Interrupt_enableInterrupt(INT_EUSCIA0);
// MAP_Interrupt_enableSleepOnIsrExit();
MAP_Interrupt_enableMaster();
uint8_t num=0;
while(1)
{
if(MAP_GPIO_getInputPinValue(GPIO_PORT_P1, GPIO_PIN1)==GPIO_INPUT_PIN_LOW){
for (num = 0; num < 10; num++){
printf("Printf test\r\n");
printf("number :%d\r\n", num);
printf("float :%6.4f\r\n", 3.141592);
}
num = 0;
}
}
}
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