/***********************************************************************************
* @fn appSelectRole
*
* @brief Select application role. Device 1, device 2 or loopback.
*
* @param none
*
* @return none
*/
static void appSelectRole(void)
{
#ifdef DEVICE_LOOPBACK_FORCE
appRole= DEVICE_LOOPBACK;
#else
#ifdef LCD_NOT_SUPPORTED
appRole= DEVICE_2;
#else
halLcdWriteLine(1, "Device Role: ");
appRole= utilMenuSelect(&pRoleMenu);
#endif // LCD_NOT_SUPPORTED
#endif // DEVICE_LOOPBACK_FORCE
halLcdClear();
// Set distinct addresses
if(appRole == DEVICE_1) {
halLcdWriteLine(HAL_LCD_LINE_2, "Device 1 ready");
appLocalAddr = DEVICE_1_ADDR;
appRemoteAddr= DEVICE_2_ADDR;
} else if (appRole == DEVICE_2) {
halLcdWriteLine(HAL_LCD_LINE_2, "Device 2 ready");
appLocalAddr = DEVICE_2_ADDR;
appRemoteAddr= DEVICE_1_ADDR;
} else if (appRole == DEVICE_LOOPBACK) {
halLcdWriteLine(HAL_LCD_LINE_2, "Loopback ready");
}
}
/***********************************************************************************
* @fn main
*
* @brief This is the main entry of the RF Modem application. It sets
* distinct short addresses for the nodes, initalises and runs
* receiver and sender tasks sequentially in an endless loop.
*
* @return none
*/
void main(void)
{
char *szTitle= "MRFI RF modem";
appUartRxIdle = FALSE;
// Initialise board peripherals
halBoardInit();
halUartInit(HAL_UART_BAUDRATE_38400, 0);
// 100 ms RX idle timeout
appConfigTimer(1000/UART_RX_IDLE_TIME);
// Indicate that the application has been initialised
halLcdClear();
halLcdWriteLine(HAL_LCD_LINE_1, szTitle);
halLedSet(1);
// Select application role (Device 1, Device 2 or Loopback)
appSelectRole();
if (appRole != DEVICE_LOOPBACK) {
// Initialize the MRFI RF link layer
mrfiLinkInit(appLocalAddr,appRemoteAddr,MRFI_CHANNEL);
}
// Indicate that the modem is operating
halLcdWriteLine(HAL_LCD_LINE_1, szTitle);
// Initialise error counters
nTxErr= nRxErr= 0;
// Enable RX idle timeout interrupt
halTimer32kIntEnable();
// Main processing loop
while(TRUE) {
// On-board device processing (UART etc.)
HAL_PROCESS();
if (appRole == DEVICE_LOOPBACK) {
// Loopback processing
appLoopbackTask();
} else {
// RF transmitter processing
appRfSenderTask();
// RF receiver processing
appRfReceiverTask();
}
}
}
/***********************************************************************************
* @fn halLcdInit
*
* @brief Initalise LCD
*
* @param none
*
* @return none
*/
void halLcdInit(void)
{
// Initialize I/O
LCD_CTRL_INIT_PORTS();
// Perform the initialization sequence
FUNCTION_SET(CGRAM | COM_FORWARD | THREE_LINE);
halLcdSetContrast(15);
SET_POWER_SAVE_MODE(OSC_OFF | POWER_SAVE_ON);
SET_POWER_CTRL(VOLTAGE_DIVIDER_ON | CONVERTER_AND_REG_ON);
SET_BIAS_CTRL(BIAS_1_5);
halMcuWaitMs(21); // 21 ms
// Clear the display
halLcdClear();
halLcdClearAllSpecChars();
SET_DISPLAY_CTRL(DISPLAY_CTRL_ON | DISPLAY_CTRL_BLINK_OFF | DISPLAY_CTRL_CURSOR_OFF);
}