/******************************************************************************
* @brief Main function
*
*****************************************************************************/
int main(void)
{
/* Initialize chip - handle erratas */
CHIP_Init( );
/* Initialize clocks and oscillators */
cmuSetup( );
/* Initialize UART peripheral */
uartSetup( );
/* Initialize Development Kit in EBI mode */
BSP_Init(BSP_INIT_DEFAULT);
/* Enable RS-232 transceiver on Development Kit */
BSP_PeripheralAccess(BSP_RS232_UART, true);
/* When DVK is configured, and no more DVK access is needed, the interface can safely be disabled to save current */
BSP_Disable();
/* Write welcome message to UART */
uartPutData((uint8_t*) welcomeString, welLen);
/* Eternal while loop
* CPU will sleep during Rx and Tx. When a byte is transmitted, an interrupt
* wakes the CPU which copies the next byte in the txBuf queue to the
* UART TXDATA register.
*
* When the predefined termiation character is received, the all pending
* data in rxBuf is copied to txBuf and echoed back on the UART */
while (1)
{
/* Wait in EM1 while UART transmits */
EMU_EnterEM1();
/* Check if RX buffer has overflowed */
if (rxBuf.overflow)
{
rxBuf.overflow = false;
uartPutData((uint8_t*) overflowString, ofsLen);
}
/* Check if termination character is received */
if (rxBuf.data[(rxBuf.wrI - 1) % BUFFERSIZE] == TERMINATION_CHAR)
{
/* Copy received data to UART transmit queue */
uint8_t tmpBuf[BUFFERSIZE];
int len = uartGetData(tmpBuf, 0);
uartPutData(tmpBuf, len);
}
}
}
void hardware_setup(void)
{
/**
*
* Hardware init
*
*/
#ifdef HAVE_WDT
// watchdog timer init
wdt_init_and_start();
#else
//stop wdg
wdt_hold();
#endif
// clocks, wdt, power, uart, spi
set_clocks_speed(MCLK_4MHZ_SMCLK_4MHZ);
driver_power_init();
//#if ! defined HAVE_CODE_COMPRESSION & ! defined HAVE_DEBUG
uartSetup(UART0_CONFIG_32KHZ_9600);
//#endif
spi_init();
timer_init();
// LEDs
LEDS_INIT();
LEDS_OFF_CHECK_MODE(led_mode);
// Temperature
#ifndef HAVE_CODE_COMPRESSION
update_temperature(); // for some unclear reason the very first temp measure is incorrect
update_temperature(); // hence taking an extra-measure for security
#endif
// powersave
#ifdef HAVE_POWERSAVE
power_init();
#endif /* HAVE_POWERSAVE */
}