Other Parts Discussed in Thread: MSP430FR2433
Tool/software:
Hello everyone!
I'm interfacing the MSP with MPU-6050 and the CCS811 gas sensor, and want to see the values via UART.
For this purpose, I coded two functions, one to convert the integer values to string and another to print using the UART module; in the main function, I made this way:
while (1)
{
acc_comm();
//int_to_string(xAccel, num);
//uart_puts(num);
//int_to_string(yAccel, num);
//uart_puts(num);
//int_to_string(zAccel, num);
//uart_puts(num);
gases_comm();
//int_to_string(co2Lvl, num);
//uart_puts(num);
//int_to_string(tvocLvl, num);
//uart_puts(num);
// do something with the data
__delay_cycles(500000);
}
When I uncomment the function calls, the communication fails.
I'd like to know what causes this issue to happen. I suppose that the I2C lines cannot be on idle, but don't have confirmations of this; any help of you guys will be very much appreciated.
For reference, I'll leave the two functions code here:
void int_to_string(int num, unsigned char *str)
{
unsigned char i = 0, j = 0;
char aux[5];
do
{
aux[i++] = num % 10 + '0';
num /= 10;
}
while(num > 0);
while(i--)
{
str[j++] = aux[i];
}
str[j] = '\0';
}
void uart_puts(unsigned char *str)
{
while(*str)
{
while(!(IFG2 & UCA0TXIFG));
UCA0TXBUF = *str++;
}
UCA0TXBUF = '\n';
}
Also, the configuration code of I2C and UART are the same of the examples in the TI developer zone.
