/**
Configures hardware for the particular hardware platform:
- Ports: sets direction, interrupts, pullup/pulldown resistors etc.
- Holds radio in reset (active-low)
*/
void halInit()
{
//
// Enable the floating-point unit.
//
FPUEnable();
//
// Configure the floating-point unit to perform lazy stacking of the
// floating-point state.
//
FPULazyStackingEnable();
oscInit();
portInit();
halUartInit();
//Point the function pointers to doNothing() so that they don't trigger a restart
debugConsoleIsr = &doNothing;
buttonIsr = &doNothing;
clearLeds();
displayVersion();
#ifdef AF_VERBOSE
printf("* AF_VERBOSE *\r\n");
#endif
}
/***********************************************************************************
* @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();
}
}
}
/***************************************************************************//**
* @brief Initialize MCU and BOARD Peripherals
*
* @note This function initializes the following
* @note \li \b MCU \b Clock
* @note \li \b BSP \b keys
* @note \li \b BSP \b LEDs
* @note \li \b LCD display (only for TRXEB)
* @note \li \b RF_SPI Interface
* @note \li \b UART interface
* @note \li \b PA_LNA controls
* @note \li \b TIMER Bit Rate for the symbols
* @note \li \b INTERRUPT enable service
*******************************************************************************/
static void
initMCU(void)
{
// Initialize clocks and I/O
//bspInit(BSP_SYS_CLK_20MHZ);
bspInit(BSP_SYS_CLK_24MHZ);
// Initialize buttons
bspKeyInit(BSP_KEY_MODE_POLL);
// Initialize leds
bspLedInit();
#ifdef __MSP430F5438A__
// Initialize SPI interface to LCD (shared with SPI flash)
bspIoSpiInit(BSP_FLASH_LCD_SPI, BSP_FLASH_LCD_SPI_SPD);
// Initialize LCD
lcdInit();
#endif
// Instantiate transceiver RF SPI interface to SCLK ~ 8 MHz */
/* Input parameter is clockDivider
* SCLK frequency = SMCLK/clockDivider
*/
//trxRfSpiInterfaceInit(2);
trxRfSpiInterfaceInit(3);
#ifdef AT_CMD
// Initialize the UART interface
halUartInit();
// Toggle UART Echo. Disabled by default. Might cause unwanted behaviour if enabled.
// Note: Try enabling local echo on the host console instead!
//uartDrvToggleEcho();
#endif
#ifdef __MSP430F5529__
// remove the reset from the rf device
RF_RESET_N_PORT_SEL &= ~RF_RESET_N_PIN;
RF_RESET_N_PORT_DIR |= RF_RESET_N_PIN;
RF_RESET_N_PORT_OUT |= RF_RESET_N_PIN;
#endif
#ifdef CC1190_PA_LNA
// initialize the IO
RF_PA_EN_PxDIR |= RF_PA_EN_PIN;
RF_LNA_EN_PxDIR |= RF_LNA_EN_PIN;
// configure idle
RF_PA_EN_PxOUT &= ~RF_PA_EN_PIN;
RF_LNA_EN_PxOUT &= ~RF_LNA_EN_PIN;
#endif
// Init Bitrate Timer
/* - FCC bit rate = 1.66ms ( 600bps )
* - ETSI bit rate = 10 ms ( 100bps )
*/
TIMER_bitrate_init();
// Enable global interrupt
_BIS_SR(GIE);
}
