Part Number: HERCULES_SAFETY_MCU_DEMOS
Hello, I am a beginner trying to get I2C to work on the TMS570LC43x Microcontroller and I am using the code provided in the "example_i2cMaster_TX_RX.c" file. I use the functions generated by HalCoGen and configure it as instructed in the example. I am getting stuck in an infinite loop (pictured below). I am not sure how to fix it.
/* Include Files */
#include "HL_sys_common.h"
/* USER CODE BEGIN (1) */
#include "HL_i2c.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) */
#define DATA_COUNT 10
#define Master_Address 0x26
#define Slave_Address 0x40
uint8_t TX_Data_Master[10] = { 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19};
uint8_t RX_Data_Master[10] = { 0 };
uint8_t TX_Data_Slave[10] = { 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29};
uint8_t RX_Data_Slave[10] = { 0 };
/* USER CODE END */
int main(void)
{
/* USER CODE BEGIN (3) */
int repeat = 0; int delay =0;
///////////////////////////////////////////////////////////////
// Master Transfer Functionality //
///////////////////////////////////////////////////////////////
/* I2C Init as per GUI
* Mode = Master - Transmitter
* baud rate = 100KHz
* Count = 10
* Bit Count = 8bit
*/
i2cInit();
/* Configure address of Slave to talk to */
i2cSetSlaveAdd(i2cREG1, Slave_Address);
/* Set direction to Transmitter */
/* Note: Optional - It is done in Init */
i2cSetDirection(i2cREG1, I2C_TRANSMITTER);
for(repeat = 0; repeat < 2; repeat++)
{
/* Configure Data count */
/* Note: Optional - It is done in Init, unless user want to change */
i2cSetCount(i2cREG1, DATA_COUNT);
/* Set mode as Master */
i2cSetMode(i2cREG1, I2C_MASTER);
/* Set Stop after programmed Count */
i2cSetStop(i2cREG1);
/* Transmit Start Condition */
i2cSetStart(i2cREG1);
/* Tranmit DATA_COUNT number of data in Polling mode */
i2cSend(i2cREG1, DATA_COUNT, TX_Data_Master);
/* Wait until Bus Busy is cleared */
while(i2cIsBusBusy(i2cREG1) == true);
/* Wait until Stop is detected */
while(i2cIsStopDetected(i2cREG1) == 0);
/* Clear the Stop condition */
i2cClearSCD(i2cREG1);
/* Simple Dealya before starting Next Block */
/* Depends on how quick the Slave gets ready */
for(delay=0;delay<1000000;delay++);
}
while(1);
/* USER CODE BEGIN (4) */
/* USER CODE END */
return 0;
}
The loop which I get stuck in is in the i2cSend() function.
void i2cSend(i2cBASE_t *i2c, uint32 length, uint8 * data)
{
uint32 index = i2c == i2cREG1 ? 0U : 1U;
/* USER CODE BEGIN (17) */
/* USER CODE END */
if ((g_i2cTransfer_t[index].mode & (uint32)I2C_TX_INT) != 0U)
{
/* we are in interrupt mode */
/*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
g_i2cTransfer_t[index].data = data;
/* start transmit by sending first byte */
/*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
i2c->DXR = (uint32)*g_i2cTransfer_t[index].data;
/*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
g_i2cTransfer_t[index].data++;
/* Length -1 since one data is written already */
g_i2cTransfer_t[index].length = (length - 1U);
/* Enable Transmit Interrupt */
i2c->IMR |= (uint32)I2C_TX_INT;
}
else
{
/* send the data */
/*SAFETYMCUSW 30 S MR:12.2,12.3 <APPROVED> "Used for data count in Transmit/Receive polling and Interrupt mode" */
while (length > 0U)
{
/*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */
while ((i2c->STR & (uint32)I2C_TX_INT) == 0U) /* GETTING STUCK HERE */
{
} /* Wait */
/*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
i2c->DXR = (uint32)*data;
/*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
data++;
length--;
}
}
/* USER CODE BEGIN (18) */
/* USER CODE END */
}
What can I do to fix this?
