void UART1_RX_IRQ()
{
// Read cahracter
unsigned char data = UART_ReadChar(UART1);
// Put data into buffer
*u1BufPtr = data;
u1BufPtr++;
if (data == CMD_DELIM)
{
// Simple buffer mantenance
// Don't use Ring Buffer, since we want string functions to
// be able to act on the buffer instead of copying it every
// time, which is time consuming
if (u1BufPtr > u1Buf + 1000)
{
// Reset pointer to beginning of buffer
u1BufPtr = u1Buf;
}
// Disabling local echo due to non-fifo U0TX implementation
// Blocks, which drops data
// Echo new line to USB
//UART_WriteChar(UART0, ';');
}
else
{
// Echo to USB
//UART_WriteChar(UART0, data);
}
}
//TODO: getchar() does not function
int _read(int file, char *ptr, int len)
{
unsigned int i;
for( i = 0; i < len; i++ ){
ptr[i] = UART_ReadChar(PRINTF_UART_RX);
}
return len;
}
/***************************************************************************//**
* @brief Reads one command from console.
*
* @param command - Read command.
*
* @return None.
*******************************************************************************/
void CONSOLE_GetCommand(char* command)
{
char receivedChar = 0;
char charNumber = 0;
while((receivedChar != '\n') && (receivedChar != '\r'))
{
UART_ReadChar(&receivedChar);
command[charNumber++] = receivedChar;
}
}
int main(void)
{
// Clock (80MHz)
SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ | SYSCTL_OSC_MAIN);
// Init LEDs
Pin_Init(rLED);
Pin_Set(rLED, LOW);
// Init UART0
UART_Init(UART0);
UART_Enable(UART0);
setbuf(stdout, NULL); // Disable printf internal buffer
// Init I2C0
I2C_Init(I2C0);
I2C_Enable(I2C0);
// Wait until user presses enter
UART_ReadChar(UART0);
// Scan for I2C addresses
for(i=0; i < (1 << 7); i++)
{
printf("x%02x:", i);
if (I2C_Write(I2C0, i, 0) == true)
printf("* ");
else
printf(" ");
Pin_Toggle(rLED);
if (i % 8 == 7)
printf("\r\n");
}
// Indicator LED off
Pin_Set(rLED, LOW);
while(1);
}
