BQ76PL455电压检测的问题
使用BQ76PL455EVM和TMS57004 LaunchPad 开发板，接入16节串联电池组。只有在读取电压的那一行程序处设置断点，程序运行至断点才能读取到正确的电压。但是如果不设置断点，让程序运行起来，就会读取到全部相同的错误的电压。帖子的最后附上我程序的压缩包
以下是断点处读取的电压
以下是错误的数据：
最后附上我的程序：
/* Include Files */
#include "sys_common.h"
#include "system.h"
/* USER CODE BEGIN (1) */
#include "gio.h"
#include "sci.h"
#include "rti.h"
#include "sys_vim.h"
#include "swi_util.h"
#include "pl455.h"
int UART_RX_RDY = 0;
int RTI_TIMEOUT = 0;
BYTE bFrame[39];
/* 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) */
/* USER CODE END */
void delay_loop();
void main(void)
{
/* USER CODE BEGIN (3) */
systemInit();
gioInit();
sciInit();
sciSetBaudrate(scilinREG, BAUDRATE);
rtiInit();
vimInit();
_enable_IRQ();
WakePL455();
CommClear();
CommReset();
// initialize local variables
int nSent, nRead, nTopFound = 0;
int nDev_ID, nGrp_ID;
uint32 wTemp = 0;
nSent = WriteReg(0, 13, 0x10, 1, FRMWRT_ALL_NR); // 选中16节电池
nSent = WriteReg(0, 3, 0xFFFF00C0, 4, FRMWRT_ALL_NR);
while(1)
{
nDev_ID = 0;
nSent = WriteReg(nDev_ID, 2, 0x00, 1, FRMWRT_SGL_R); // send read sampled values command
nSent = WaitRespFrame(bFrame, 39, 0);// 24 bytes data + packet header + CRC, 0ms timeout
gioToggleBit(gioPORTA, 2); //此处设置断点
delayms(500);
// delay_loop();
}
/* USER CODE END */
}
void delay_loop() {
long x, y;
for (y = 0; y < 10; y++)
for (x = 0; x < 50000; x++) {
}
}
/* USER CODE BEGIN (4) */
/* USER CODE END */
把while循环的指令改成
nSent = WriteReg(nDev_ID, 2, 0x00, 1, FRMWRT_SGL_NR); // send sample and store command
delayms(6);
nSent = WriteReg(nDev_ID, 2, 0x20, 1, FRMWRT_SGL_R); // send read sampled values command
nSent = WaitRespFrame(bFrame, 39, 0);// 24 bytes data + packet header + CRC, 0ms timeout
我把While循環裏面改了，結果還是一樣的，讀到的一直是D0BA，這是爲什麽？
/* USER CODE BEGIN (0) */
/* USER CODE END */
/* Include Files */
#include "sys_common.h"
#include "system.h"
/* USER CODE BEGIN (1) */
#include "gio.h"
#include "sci.h"
#include "rti.h"
#include "sys_vim.h"
#include "swi_util.h"
#include "pl455.h"
int UART_RX_RDY = 0;
int RTI_TIMEOUT = 0;
BYTE bFrame[39];
/* 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) */
/* USER CODE END */
void main(void)
{
/* USER CODE BEGIN (3) */
systemInit();
gioInit();
sciInit();
sciSetBaudrate(scilinREG, BAUDRATE);
rtiInit();
vimInit();
_enable_IRQ();
WakePL455();
CommClear();
CommReset();
// initialize local variables
int nSent, nRead, nTopFound = 0;
int nDev_ID, nGrp_ID;
sciSetBaudrate(scilinREG, BAUDRATE);
uint32 wTemp = 0;
nSent = WriteReg(0, 13, 0x10, 1, FRMWRT_ALL_NR); // set number of cells to 16
nSent = WriteReg(0, 3, 0xFFFF00C0, 4, FRMWRT_ALL_NR);
while(1)
{
nDev_ID = 0;
// nSent = WriteReg(nDev_ID, 2, 0x00, 1, FRMWRT_SGL_R); // send read sampled values command
// nSent = WaitRespFrame(bFrame, 39, 0);// 24 bytes data + packet header + CRC, 0ms timeout
// gioToggleBit(gioPORTA, 2);
// delayms(500);
nSent = WriteReg(nDev_ID, 2, 0x00, 1, FRMWRT_SGL_NR); // send sample and store command
delayms(6);
nSent = WriteReg(nDev_ID, 2, 0x20, 1, FRMWRT_SGL_R); // send read sampled values command
nSent = WaitRespFrame(bFrame, 39, 0);// 24 bytes data + packet header + CRC, 0ms timeout
delayms(6);
}
/* USER CODE END */
}
/* USER CODE BEGIN (4) */
/* USER CODE END */
我將While循環裏的程序替換成您提供的程序后，仍然只能在程序跑起來后讀取到完全相同的D0BA的值，只有設置斷點才能讀取到正常的電壓值，請問您能再幫我解答一下嗎？
已找到问题所在，是CCS软件本身的问题，发出的数据没有错。
我也在做这方面东西，可以一起讨论一下么 大哥，我qq595658552