Hi everyone. I try to integrate VL53L3CX range sensor in an applicaction using nRF microcontrollers. I am using the API 1.1.4. I would like to test a I2C read first, so I edited the function VL53LX_ReadMulti() in file vl53lx_platform.c as follow :
VL53LX_Error VL53LX_ReadMulti(
VL53LX_Dev_t *pdev,
uint16_t index,
uint8_t *pdata,
uint32_t count)
{
VL53LX_Error status = VL53LX_ERROR_NONE;
uint8_t *pBuffer = pdata;
//uint8_t DevAddr = pdev->I2cDevAddr;
status = (int8_t)bus_i2c_ReadData( pdev->i2c_slave_address, pdata, pdev->i2c_slave_address|1, count);
return status;
}The function I have to use is implemented as follow :
/**
* @brief Reads Data from I2C communication bus.
* @param[in] DevAddr: Device address.
* @param[out] pBuffer: pointer to the buffer that receives the data read from the Device.
* @param[in] ReadAddr: Device's internal address to start reading from.
* @param[in] DataSize: number of bytes to read.
* @retval ret_code_t: NRF_SUCCESS (0) if operation is correctly performed, else return value different from NRF_SUCCESS (0).
*/
ret_code_t bus_i2c_ReadData(uint8_t DevAddr, uint8_t * pBuffer, uint8_t ReadAddr, size_t DataSize)
{
ret_code_t ret;
uint8_t addr8 = (uint8_t)ReadAddr;
do
{
ret = nrf_drv_twi_tx(&I2C_drv, DevAddr, &addr8, 2, true);
if (NRF_SUCCESS != ret)
break;
ret = nrf_drv_twi_rx(&I2C_drv, DevAddr, pBuffer, DataSize);
debug_uart_printf("ret = 0x%x \n\r", ret);
} while(0);
debug_uart_printf("ret = 0x%x \n\r", ret);
return ret;
}And my main is :
#include "system.h"
#include "hardware.h"
#include "vl53lx_api.h"
#include "bus_i2c_drv.h"
#include "debug_uart_nrf52.h"
#include "nrf_delay.h"
/**@brief Application main function.
*/
VL53LX_Dev_t dev;
VL53LX_DEV Dev = &dev;
VL53LX_Error status=0;
volatile int IntCount;
int main(void)
{
uint8_t byteData;
uint16_t wordData;
uint8_t ToFSensor = 1; // 0=Left, 1=Center(default), 2=Right
VL53LX_MultiRangingData_t MultiRangingData;
VL53LX_MultiRangingData_t *pMultiRangingData = &MultiRangingData;
uint8_t NewDataReady=0;
int no_of_object_found=0,j;
// Initialize.
hardware_IO_init();
debug_uart_init();
Dev->i2c_slave_address = 0X52;
bus_i2c_Init();
// Enter main loop.
for (;;)
{
hardware_set_pin(PIN_PWR_SENS2); // VDD VL53L3
hardware_set_pin(PIN_PWR_SENS); // Pull-up i2c
status=VL53LX_WaitDeviceBooted(Dev);
debug_uart_printf("Status = %d \n\r", status);
nrf_delay_ms(2);
status = 0;
VL53LX_RdByte(Dev, 0x010F, &byteData);
nrf_delay_ms(1000);
}
}I use VL53LX_RdByte() according to the STM32F401RE example because I know which value must be returned. However, the nrf returns a NACK after VL53LX_RdByte(). So I checked the status value returned from the function WaitDeviceBooted(Dev), and it seems the function return 1 :
