Hi everyone!
I am intending to share data between two functions on a different .c files. On all examples I have seen on PSoC Creator, all of them uses variables declared as a "extern", so it os possible share data between functions on different .c files .
I am trying to use pointers as a function arguments, but it seems I am doing something wrong. Here is a portion of my code:
uint8 *ReadByteData;
uint8 MPU9250_alive_request(void){
I2CMaster_ReadByte(MPU9250_ADDRESS, wrData, ReadByteData);
UART_UartPutString("data is : 0x");
sprintf(UARTbufferASCII,"%x", *ReadByteData); //convert hex to ASCII
UART_UartPutString(UARTbufferASCII);
UART_UartPutString("\n\r");
}
uint8 I2CMaster_ReadByte (uint32 address, uint8 *subAddress, uint8 *data){
I2C_I2CMasterReadBuf(address, data, 1, I2C_I2C_MODE_COMPLETE_XFER);
}
The issue is that the code above is not working, but if I declare uint8 *ReadByteData inside of the MPU9250_alive_request() function all is working good, but that variable wouldn't be visible on all variables of Sensors.c file. Why if I declare the variable inside the function works? As I know about pointer usage, the code above should work if I do that:
uint8 *ReadByteData;
uint8 MPU9250_alive_request(void){
I2CMaster_ReadByte(MPU9250_ADDRESS, wrData, &ReadByteData);
UART_UartPutString("data is : 0x");
sprintf(UARTbufferASCII,"%x", *ReadByteData); //convert hex to ASCII
UART_UartPutString(UARTbufferASCII);
UART_UartPutString("\n\r");
}
uint8 I2CMaster_ReadByte (uint32 address, uint8 *subAddress, uint8 *data){
I2C_I2CMasterReadBuf(address, data, 1, I2C_I2C_MODE_COMPLETE_XFER);
}
But the outcome is that is not working. On another projects using different IDE it has worked good, but I don't know why not here
It seems like PSoC creator is not behaving good with pointers. Could anyone help me?
Thank you so much in advance!
Josué
pd:Attached is the complete files code I'm speaking about
