Hello everybody,
Hardware: PSoC 4 Pioneer Kit 042
2x TLE493D 3D Hallsensors
The problem is that after I flash or reset the board, the sensors are sometimes (almost every second reset) not initialized correctly.
After the reset I get a normal communication or only the first sensor is initialized and the second one gets stuck and there are only interrupts on the SDC line.
Although I only have a delay of 150 µs between the initialization of the first and second sensor in my source code, I measure a delay after the reset of the board of 60 ms as shown in the picture.
The reset() function resets both sensors by sending 0xFF twice and 0x00 twice with a delay of 30 µs to the I2C bus as described in the User Manual.
After that I initialize the sensor one with the address 0x22 and then the Vcc of the second sensor power up and init the second sensor with the address 0x35
// ---------------------------------------------------------
/*********************************************************
* Configuration and initialization of the TLE493D sensor
********************************************************/
reset();
// Power Off / Power On the TLE493D
VDD_sensor_Write(0);
TLE493D_Init(TLE493D_AW2B6_I2C_A1_ADDR);
VDD_sensor_Write(1);
CyDelayUs(150); // Small Delay
TLE493D_Init(TLE493D_AW2B6_I2C_A0_ADDR);
UART_PutString(" Beginne mit der Kalibrierung ");
UART_PutCRLF();
CyDelay(100);
Why does this error happen and where does the 60 ms delay come from?
Best Regards
Michael
