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I2C assertion failed

Topic last updated 03 Sep 2009, by lv zhenjiang. 0 replies
lv zhenjiang
03 Sep 2009

Hello,

I use I2C control TDA7541 and write data to chip.

code is below:

#include "mbed.h"

I2C i2c(p28, p27);
Serial pc(USBTX, USBRX);
DigitalOut myled1(LED1);

int main() {

    pc.printf("Program Begin ...\n");
    
    myled1=0;
    char write_addr[2];
    write_addr[0]=0x00;    // register address
    write_addr[1]=0x0B;   // command
    i2c.write(0xC4, write_addr , 2);   // 0xC4 is chip address
    myled1=1;
    

}

but when I execute the program ,it happen error.

*** assertion failed: timeout < 1000000, file src/i2c_api.c, line 54

Why ?

Please tell me how to do

Thanks

zhenjiang