Setting up clock on nRF24le1 for I2C

RE: Setting up clock on nRF24le1 for I2C

sid7 — Sat, 18 Mar 2017 03:38:45 GMT

Yes, I got it. Thank you.

RE: Setting up clock on nRF24le1 for I2C

Hung Bui — Fri, 17 Mar 2017 08:26:52 GMT

Have you mounted pullup resistor to I2C pins ? Please have a look here.

Attached is a working example or I2C master and I2C slave I made for nRF24LE1. If you have 2 nRF24LE1 boards you can use the examples for testing.

I2C_Master.rar

I2C_Slave.rar

RE: Setting up clock on nRF24le1 for I2C

sid7 — Thu, 16 Mar 2017 20:11:21 GMT

Thank you for your response. I hadn't done that but I just tried it now. I still don't see anything on the clock or the data lines on the oscilloscope. The code I used is below. Any suggestions on how should I proceed to troubleshoot this?

void main() {

P0DIR = 0x00;											// Initiating IO pins 
hal_w2_configure_master(HAL_W2_100KHZ);
EA = 1;


/* writing intitiation sequence for MC3671 */

hal_w2_write(0xD8,i1, 2);						// reset 
delay_us(10000);									// delay required after reset
hal_w2_write(0xD8,i2, 2);
hal_w2_write(0xD8,i3, 2);
hal_w2_write(0xD8,i4, 2);
hal_w2_write(0xD8,i5, 2);
hal_w2_write(0xD8,i6, 2);
hal_w2_write(0xD8,i7, 2);

}

RE: Setting up clock on nRF24le1 for I2C

Hung Bui — Wed, 15 Mar 2017 12:17:55 GMT

@sid: Have you tried to do a write with hal_w2_write() ? When the I2C doesn't have to send anything, it will not output any clock out.