I2C bus locked...

[ZorchDiabetes]

Hi Bud,

Everything has been working fine, and then I somehow got it into I2C-WRITE:

attempt to reset I2C bus Starting I2C bus recovery bus recovery done, return in 2 secs attempt to reset I2C bus Starting I2C bus recovery bus recovery done, return in 2 secs

TFMPlus I2C Library 1.5.0 System reset: Status: I2C-WRITE 00 00 00 00 00 00 00 00 Firmware version: Status: I2C-WRITE 00 00 00 00 00 00 00 00 Data-Frame rate: Status: I2C-WRITE 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00 Status: I2C-WRITE Data: 00 00 00 00 00 00 00 00 00

Where / how should I recover the bus?

In your TFMPI2C_example.ino, I added these lines, to no avail:

void setup() { Serial.begin( 9600); // Initialize terminal serial port printf_begin(); // Initialize printf library. delay(20);

**Serial.println("attempt to reset I2C bus");
tfmP.recoverI2CBus(27, 28);**

Wire.begin();            // Initialize two-wire interface

// Wire.setClock( 400000); // Set I2C bus speed to 'Fast' if // your Arduino supports 400KHz. Serial.println("attempt to reset I2C bus"); tfmP.recoverI2CBus(27, 28);

printf( "\r\nTFMPlus I2C Library 1.5.0\r\n");  // say 'hello'

// Send some example commands to the TFMini-Plus
// - - Perform a system reset - - - - - - - - - - -
printf( "System reset: ");
if( tfmP.sendCommand( SOFT_RESET, 0))
{
    printf( "passed.\r\n");
}

The board is a pro mini with a Lora radio, https://www.makerfabs.com/wiki/index.php?title=Maduino_Lora_Radio_(433M/868M)

Regards,

Lane

[budryerson]

I'm sorry I missed this - and by now I'm probably much too late. Are you still having a problem? Resetting the I2C bus is for the processor not the sensor. If the sensor is in I2C mode, you will have to send the SET_SERIAL_MODE command via the I2C bus to get it back into Serial mode. Again, I apologize for missing your message. Let me know if I can help. Budf

[budryerson]

On January 1, 2021, ZorchDiabetes wrote: "Thanks for getting back to me. I was able to get the TFmini working again - when I bricked it with I2C, it reverted to serial (factory reset)? I used a Mega to get it back into I2C mode before reconnecting it to the LORA, which only has one serial port... The project was quite fun; I learned a lot."