TMS570LS1114接收TPS65381A-Q1回复数据整体右移了一位，导致接回来的数据不正确

user6121941

Prodigy 180 points

Other Parts Discussed in Thread: TMS570LS1114, TPS65381A-Q1

TMS570LS1114接收TPS65381A-Q1回复数据整体右移了一位，导致接回来的数据不正确，接回来的数据应该是以0xA8开头的，我的接回来的是0x50开头的，我发送命令使用的是无奇偶校验的命令，有大神知道是什么原因吗？

4 年多前

0 Susan Yang 4 年多前

TI__Guru**** 252096 points

您是参考的官方驱动库？作为Hercules SafeTI诊断库（SAFETI_DIAG_LIB）的一部分，TPS6531A-Q1有一个软件Hercules / TMS570驱动程序。该库可在以下网址找到：

www.ti.com/.../SAFETI_DIAG_LIB

能否详细说明下您的问题？

整体数据右移的话有可能是主从时钟不同步导致的？您可以尝试在初始化master后复位slave，等待slave初始化完毕后再传输数据

0 user6121941 4 年多前回复 Susan Yang

Prodigy 180 points

#include "sys_common.h"
#include "spi.h"
#include "gio.h"

spiDAT1_t peizhi;

uint16 cmd[2] = {0x5D55,0x3E00}; //0x55解锁写命令， 0x3E
uint16 rcv[5] = {0};
/* USER CODE END */
void main(void)
{
/* USER CODE BEGIN (3) */
int i;
spiInit();
peizhi.CS_HOLD = 1;
peizhi.DFSEL = SPI_FMT_1;
peizhi.WDEL = 0;
peizhi.CSNR = SPI_CS_0;
while(1){

spiTransmitAndReceiveData(spiREG3, &peizhi, 1, cmd, rcv);
for(i=0;i<100;i++);
spiTransmitAndReceiveData(spiREG3, &peizhi, 1, &cmd[1], &rcv[1]);

}
/* USER CODE END */
}
您好，我抓了一下波形，时序图和datasheet的一致，这是源码，我用的是无奇偶校验的命令，为什么所有写命令回复是都是FF？是我的命令发的错误还是什么原因呢？能帮忙解答一下吗？谢谢您

0 Susan Yang 4 年多前回复 user6121941

TI__Guru**** 252096 points

建议您先试一下下面的程序

/** @file example_SPI_Master_Slave.c
*   @brief Application main file
*   @date 25.July.2013
*   @version 03.06.00
*
*   This file contains an example of SPI1 and SPI2 Master / Slave configurations.
*
*   PIN Connections must be as Below
*     ---------------         ---------------
*     SPI1 ( Master )          SPI2 ( SLave)
*     ---------------         ---------------
*     SIM0             --->    SIMO
*     S0MI             <---    SOMI
*     CLK              --->    CLK
*     CS0              --->    CS0
*
*  ------------------
*  GUI configurations
*  ------------------
*  1) Driver TAB
*       - Select SPI2
*       - Select SPI1
*  2) VIm Channel 0-31
*       - Enable SPI2 Level 0 and Level 1 channels.
*  3) SPI2 TAB
*       - SPI2 Global SubTAB
*       	- Uncheck Master Mode
*       	- Uncheck Internal Clock
*       - SPI2 Port SubTAB
*       	- Uncheck DIR for CS 0
*  3) SPI1 TAB
*       - Have it default
*  4) Generate Code.
*
*/

/* (c) Texas Instruments 2009-2013, All rights reserved. */

/* USER CODE BEGIN (0) */
/* USER CODE END */

/* Include Files */

#include "sys_common.h"
#include "system.h"

/* USER CODE BEGIN (1) */
#include "spi.h"
/* USER CODE END */

/** @fn void main(void)
*   @brief Application main function
*   @note This function is empty by default.
*
*   This function is called after startup.
*   The user can use this function to implement the application.
*/

/* USER CODE BEGIN (2) */
uint16 TX_Data_Master[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };
uint16 TX_Data_Slave[16]  = { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20 };
uint16 RX_Data_Master[16] = { 0 };
uint16 RX_Data_Slave[16]  = { 0 };
/* USER CODE END */

void main(void)
{
/* USER CODE BEGIN (3) */

	spiDAT1_t dataconfig1_t;

	dataconfig1_t.CS_HOLD = FALSE;
	dataconfig1_t.WDEL    = TRUE;
	dataconfig1_t.DFSEL   = SPI_FMT_0;
	dataconfig1_t.CSNR    = 0xFE;


	/* Enable CPU Interrupt through CPSR */
	_enable_IRQ();

	/* Initialize SPI Module Based on GUI configuration
	 * SPI1 - Master ( SIMO, SOMI, CLK, CS0 )
	 * SPI2 - Slave  ( SIMO, SOMI, CLK, CS0 )
	 * */
	spiInit();

	/* Initiate SPI2 Transmit and Receive through Interrupt Mode */
	spiSendAndGetData(spiREG2, &dataconfig1_t, 16, TX_Data_Slave, RX_Data_Slave);

	/* Initiate SPI1 Transmit and Receive through Polling Mode*/
	spiTransmitAndReceiveData(spiREG1, &dataconfig1_t, 16, TX_Data_Master, RX_Data_Master);

	while(1);
/* USER CODE END */
}

/* USER CODE BEGIN (4) */
/* USER CODE END */

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TMS570LS1114接收TPS65381A-Q1回复数据整体右移了一位，导致接回来的数据不正确