int main(void) {
// Init PIC24
InitMain();
// Init modules
AudioInInit();
Uart2Init(UART_BAUD_250000, 0);
LedsInit();
// Main loop
while(1) {
if(AudioInIsGetReady()) {
Fixed audioSample = AudioInGet();
// Update LEDs
LedsUpdate(audioSample);
// Print audio sample
Uart2RxTasks();
if(Uart2IsPutReady() >= 6) {
static const char asciiDigits[10] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
int i = FIXED_TO_INT(audioSample);
div_t n;
int print = 0;
if(i < 0) {
Uart2PutChar('-');
i = -i;
}
if(i >= 10000) {
n = div(i, 10000);
Uart2PutChar(asciiDigits[n.quot]);
i = n.rem;
print = 1;
}
if(i >= 1000 || print) {
n = div(i, 1000);
Uart2PutChar(asciiDigits[n.quot]);
i = n.rem;
print = 1;
}
if(i >= 100 || print) {
n = div(i, 100);
Uart2PutChar(asciiDigits[n.quot]);
i = n.rem;
print = 1;
}
if(i >= 10 || print) {
n = div(i, 10);
Uart2PutChar(asciiDigits[n.quot]);
i = n.rem;
}
Uart2PutChar(asciiDigits[i]);
Uart2PutChar('\r');
}
}
}
}
/**
* @brief Loads byte array into software transmit buffer starts interrupt-driven
* transmission.
*
* This function should only be called if space is available. Call
* Uart1IsPutReady to determine the number of bytes that may be loaded into the
* software transmit buffer.
*
* Example use:
* @code
* char array[] = { 1, 2, 3 };
* if(Uart1IsPutReady() > sizeof(array)) {
* Uart1PutCharArray(array, sizeof(array));
* }
* @endcode
*
* @param source Address of byte array.
* @param numberOfBytes Number of bytes in byte array.
* @return 0 if successful.
*/
int Uart2PutCharArray(const char* const source, const size_t numberOfBytes) {
if (numberOfBytes > Uart2IsPutReady()) {
return 1; // error: not enough space in buffer
}
int i;
for (i = 0; i < numberOfBytes; i++) {
Uart2PutChar(source[i]);
}
return 0;
}
/**
* @brief Loads string into software transmit buffer starts interrupt-driven
* transmission.
*
* This function should only be called if space is available. Call
* Uart1IsPutReady to determine the number of bytes that may be loaded into the
* software transmit buffer. The terminating null character will not be sent.
*
* Example use:
* @code
* char string[] = "Hello World!";
* if(Uart1IsPutReady() > sizeof(string) - 1) {
* Uart1PutString(string);
* }
* @endcode
*
* @param string
*/
void Uart2PutString(const char* string) {
while (*string != '\0') {
Uart2PutChar(*string++);
}
}