/* Board Debug UART Initialisation function */
STATIC void Board_UART_Init(void)
{
/* Enable the clock to the Switch Matrix */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
/* Connect the U0_TXD_O and U0_RXD_I signals to port pins(P0.07, P0.18) */
Chip_SWM_DisableFixedPin(SWM_FIXED_ADC0);
Chip_SWM_DisableFixedPin(SWM_FIXED_ADC8);
/* Enable UART Divider clock, divided by 1 */
Chip_Clock_SetUARTClockDiv(1);
/* Divided by 1 */
if (DEBUG_UART == LPC_USART0) {
Chip_SWM_MovablePinAssign(SWM_U0_TXD_O, 7);
Chip_SWM_MovablePinAssign(SWM_U0_RXD_I, 18);
} else if (DEBUG_UART == LPC_USART1) {
Chip_SWM_MovablePinAssign(SWM_U1_TXD_O, 7);
Chip_SWM_MovablePinAssign(SWM_U1_RXD_I, 18);
} else {
Chip_SWM_MovablePinAssign(SWM_U2_TXD_O, 7);
Chip_SWM_MovablePinAssign(SWM_U2_RXD_I, 18);
}
/* Disable the clock to the Switch Matrix to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
}
/* Initializes pin muxing for SPI1 interface - note that SystemInit() may
already setup your pin muxing at system startup */
static void Init_SPI_PinMux(void)
{
#if (defined(BOARD_NXP_LPCXPRESSO_812) || defined(BOARD_LPC812MAX))
/* Enable the clock to the Switch Matrix */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
/*
* Initialize SSP0 pins connect
* SCK1: PINASSIGN4[31:24]: Select P0.12
* MOSI1: PINASSIGN5[7:0]: Select P0.14
* MISO1: PINASSIGN5[15:8] : Select P0.6
* SSEL1: PINASSIGN5[23:16]: Select P0.13
*/
Chip_SWM_DisableFixedPin(SWM_FIXED_VDDCMP);
Chip_SWM_MovablePinAssign(SWM_SPI0_SCK_IO, 12);
Chip_SWM_MovablePinAssign(SWM_SPI1_SCK_IO, 7);
Chip_SWM_MovablePinAssign(SWM_SPI0_MOSI_IO, 14);
Chip_SWM_MovablePinAssign(SWM_SPI1_MOSI_IO, 9);
#if defined(BOARD_LPC812MAX)
Chip_SWM_MovablePinAssign(SWM_SPI0_MISO_IO, 15);
Chip_SWM_MovablePinAssign(SWM_SPI1_MISO_IO, 0);
#else
Chip_SWM_MovablePinAssign(SWM_SPI0_MISO_IO, 6);
Chip_SWM_MovablePinAssign(SWM_SPI1_MISO_IO, 1);
#endif
Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I1);
Chip_SWM_MovablePinAssign(SWM_SPI0_SSEL_IO, 13);
Chip_SWM_MovablePinAssign(SWM_SPI1_SSEL_IO, 10);
/* Disable the clock to the Switch Matrix to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
#elif defined(BOARD_NXP_LPCXPRESSO_824)
/* Enable the clock to the Switch Matrix */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
/* Master Pins for SPI0 */
Chip_SWM_MovablePinAssign(SWM_SPI0_SSEL0_IO, 15);
Chip_SWM_MovablePinAssign(SWM_SPI0_SCK_IO, 24);
Chip_SWM_MovablePinAssign(SWM_SPI0_MISO_IO, 25);
Chip_SWM_MovablePinAssign(SWM_SPI0_MOSI_IO, 26);
/* Slave Pins for SPI1 */
Chip_SWM_MovablePinAssign(SWM_SPI1_SSEL0_IO, 17);
Chip_SWM_MovablePinAssign(SWM_SPI1_SCK_IO, 18);
Chip_SWM_MovablePinAssign(SWM_SPI1_MISO_IO, 28);
Chip_SWM_MovablePinAssign(SWM_SPI1_MOSI_IO, 16);
/* Disable the clock to the Switch Matrix to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
#else
/* Configure your own SPI pin muxing here if needed */
#warning "No SPI pin muxing defined"
#endif
}
/* Initialize the LEDs on the NXP_Quick_Jack board */
void Board_LED_Init(void)
{
uint32_t i;
Chip_SWM_DisableFixedPin(SWM_FIXED_XTALIN); //pin 8
Chip_SWM_DisableFixedPin(SWM_FIXED_XTALOUT); //pin 9
//heart beat on pin 13
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, LEDHEARTBEAT);
Chip_GPIO_SetPinState(LPC_GPIO_PORT, 0, LEDHEARTBEAT, true);
}
int __attribute__ ((noinline)) main(void)
{
/* set systick and start systick interrupt */
SysTick_Config(SYS_CORE_CLOCK/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS);
/* turn on GPIO */
Chip_GPIO_Init(LPC_GPIO_PORT);
/* disable SWCLK and SWDIO, after reset, boot code may activate this */
Chip_SWM_DisableFixedPin(2);
Chip_SWM_DisableFixedPin(3);
/* turn on IOCON */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON);
/* turn on switch matrix */
Chip_SWM_Init();
/* activate analog comperator */
Chip_ACMP_Init(LPC_CMP);
/* let LED on pin 4 of the DIP8 blink */
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, 2);
for(;;)
{
Chip_GPIO_SetPinOutHigh(LPC_GPIO_PORT, 0, 2);
delay_micro_seconds(500000UL);
Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, 0, 2);
delay_micro_seconds(500000UL);
}
/* enter sleep mode: Reduce from 1.4mA to 0.8mA with 12MHz */
while (1)
{
SCB->SCR |= (1UL << SCB_SCR_SLEEPONEXIT_Pos); /* enter sleep mode after interrupt */
Chip_PMU_SleepState(LPC_PMU); /* enter sleep mode now */
}
}
/**
* Configure the pinmuxing for the MultiSensor board.
*
* only the special functions are set here, default the pins are gpio.
*/
void PINMUX_Init()
{
/* Enable the clock to the Switch Matrix */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
/* DISconnect the XTALIN and XTALOUT signals to port pins(P0.8, P0.9), as these will be used for gpio purposes */
/* these are fixed location pins */
Chip_SWM_FixedPinEnable(SWM_FIXED_XTALIN, false);
Chip_SWM_FixedPinEnable(SWM_FIXED_XTALOUT, false);
/* connect the fixed reset_n pin to P0.5 */
Chip_SWM_EnableFixedPin(SWM_FIXED_RST);
/* Connect the I2C_SDA0 and I2C_SCL0 signals to port pins(P0.10, P0.11) */
/* these are fixed location pins */
Chip_SWM_EnableFixedPin(SWM_FIXED_I2C0_SDA);
Chip_SWM_EnableFixedPin(SWM_FIXED_I2C0_SCL);
/* Connect the ADC0 (P0.7) and ADC1 (P0.6) */
/* these are fixed location pins */
Chip_SWM_EnableFixedPin(SWM_FIXED_ADC0);
Chip_SWM_EnableFixedPin(SWM_FIXED_ADC1);
/* Connect the USART0 TX & RX signals to port pins(P0.16, P0.26) */
/* these are movable location pins */
Chip_SWM_MovablePinAssign(SWM_U0_TXD_O, 16);
Chip_SWM_MovablePinAssign(SWM_U0_RXD_I, 26);
/* Connect the USART1 RX signal to port pins(P0.25) */
/* these are movable location pins */
Chip_SWM_MovablePinAssign(SWM_U1_RXD_I, 25);
/* Connect the SCT OUTPUT 1,2,3 (PWM : RGB) signal to port pin(P0.1, P0.9, P0.8) --> this is the RGB led*/
/* these are movable location pins */
Chip_SWM_MovablePinAssign(SWM_SCT_OUT1_O, 1);
Chip_SWM_MovablePinAssign(SWM_SCT_OUT2_O, 9);
Chip_SWM_MovablePinAssign(SWM_SCT_OUT3_O, 8);
/* make sure to disable fixed pin functionality for HUMIDITY dht22 data pin */
Chip_SWM_DisableFixedPin(SWM_FIXED_ADC10);
//Chip_SWM_MovablePinAssign(SWM_SCT_IN1_I, 13);
/* Disable the clock to the Switch Matrix to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
}
void SensorSwitch_Init(void){
Chip_SWM_DisableFixedPin(SWM_FIXED_XTALOUT);
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, DUALSWTCHINPUT);
}
uint32_t SPI_ReadCh0(void){
/* Disable clocks to SWM and IOCON to save power */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON);
// initialize pins
Chip_SWM_DisableFixedPin(SWM_FIXED_XTALIN);
Chip_SWM_MovablePinAssign(SWM_SPI1_SCK_IO, 8);
Chip_SWM_MovablePinAssign(SWM_SPI1_MOSI_IO, 17);
Chip_SWM_MovablePinAssign(SWM_SPI1_MISO_IO, 16);
//TODO: do we need to set slave select if it's tied to ground?
Chip_SWM_MovablePinAssign(SWM_SPI1_SSEL_IO, 4);
ConfigStruct.Mode = SPI_MODE_MASTER;
ConfigStruct.ClkDiv = Chip_SPI_CalClkRateDivider(LPC_SPI1, 100000);
ConfigStruct.ClockMode = SPI_CLOCK_CPHA0_CPOL0;
ConfigStruct.DataOrder = SPI_DATA_MSB_FIRST; //enable MSB first option
ConfigStruct.SSELPol = SPI_CFG_SPOL_LO;
Chip_SPI_Init(LPC_SPI1, &ConfigStruct);
DelayConfigStruct.FrameDelay = 0;
DelayConfigStruct.PostDelay = 0;
DelayConfigStruct.PreDelay = 0;
DelayConfigStruct.TransferDelay = 0;
Chip_SPI_DelayConfig(LPC_SPI1, &DelayConfigStruct);
Chip_SPI_Enable(LPC_SPI1);
//Chip_SPI_EnableLoopBack(LPC_SPI1);
// init transmit buffer
TxBuf[0] = 0x68;
TxBuf[1] = 0x00;
XfSetup.Length = BUFFER_SIZE;
XfSetup.pTx = TxBuf;
XfSetup.RxCnt = XfSetup.TxCnt = 0;
XfSetup.DataSize = 8;
XfSetup.pRx = RxBuf;
Chip_SPI_RWFrames_Blocking(LPC_SPI1, &XfSetup);
uint16_t value = ((RxBuf[0] & 0x03) << 8) + (RxBuf[1] & 0xFF);
//Chip_SPI_DisableLoopBack(LPC_SPI1);
/* DeInitialize SPI peripheral */
Chip_SPI_DeInit(LPC_SPI1);
/* Disable clocks to SWM and IOCON to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_IOCON);
return value;
}
int32_t main(void) {
int32_t i,cnt=0;
uint8_t RC5_System_prev=0;
uint8_t RC5_Command_prev=0;
CHIP_PMU_MCUPOWER_T mcupower=PMU_MCU_SLEEP;
SystemCoreClockUpdate();
// init GPIO
Chip_GPIO_Init(LPC_GPIO_PORT);
Chip_SYSCTL_PeriphReset(RESET_GPIO);
// init SPI0 at SystemCoreClock speed
Chip_SPI_Init(LPC_SPI0);
Chip_SPI_ConfigureSPI(LPC_SPI0,SPI_MODE_MASTER|
SPI_CLOCK_CPHA0_CPOL0|
SPI_DATA_MSB_FIRST|
SPI_SSEL_ACTIVE_LO);
LPC_SPI0->DIV=0;
Chip_SPI_Enable(LPC_SPI0);
// init MRT
Chip_MRT_Init();
// init SWM
Chip_SWM_Init();
Chip_SWM_DisableFixedPin(SWM_FIXED_SWCLK);//PIO0_3
Chip_SWM_DisableFixedPin(SWM_FIXED_SWDIO);//PIO0_2
Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I2);//PIO0_1
Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I1);//PIO0_0
Chip_SWM_MovablePinAssign(SWM_SPI0_SCK_IO,CLK_PIN);
Chip_SWM_MovablePinAssign(SWM_SPI0_MOSI_IO,MOSI_PIN);
Chip_SWM_MovablePinAssign(SWM_CTIN_0_I,IR_PIN);
Chip_SWM_Deinit();
// init onboard LED
Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,true);
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT,0,LED_PIN);
// init LCD reset pin
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT,0,RESET_PIN);
// init LCD
LCDInit();
LCDClearScreenBlack();
// init SCT
Chip_SCT_Init(LPC_SCT);
// set prescaler, SCT clock = 1 MHz, clear counter
LPC_SCT->CTRL_L |= SCT_CTRL_PRE_L(SystemCoreClock/1000000-1) | SCT_CTRL_CLRCTR_L;
sct_fsm_init();
NVIC_EnableIRQ(SCT_IRQn);
// init PIO0_3 pin interrupt for wakeup from sleep mode
Chip_SYSCTL_SetPinInterrupt(IR_IRQ,IR_PIN);
Chip_PININT_EnableIntLow(LPC_PININT, PININTCH(IR_IRQ));
NVIC_EnableIRQ(PININT3_IRQn);
Chip_SYSCTL_EnablePINTWakeup(IR_IRQ);
// set sleep options
Chip_SYSCTL_SetDeepSleepPD(SYSCTL_DEEPSLP_BOD_PD | SYSCTL_DEEPSLP_WDTOSC_PD);
Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD ));
LCDPutStr("kbiva.wordpress.com", MAX_X / 2 + 50, 10, WHITE, BLACK);
LCDPutStr("RC5 Decoder", MAX_X / 2 + 35, 35, WHITE, BLACK);
LCDPutStr("Frame:", MAX_X / 2 + 20, 1, WHITE, BLACK);
LCDPutStr("System:", MAX_X / 2 + 5 , 1, WHITE, BLACK);
LCDPutStr("Cmd:", MAX_X / 2 - 10, 1, WHITE, BLACK);
LCDPutStr("Toggle:", MAX_X / 2 - 25, 1, WHITE, BLACK);
LCDPutStr("Count:", MAX_X / 2 - 40, 1, WHITE, BLACK);
while (1) {
// put chip to sleep
switch(mcupower) {
case PMU_MCU_SLEEP:
default:
LCDPutStr("SLEEP ", MAX_X / 2 - 60, 10, WHITE, BLACK);
Chip_PMU_SleepState(LPC_PMU);
break;
case PMU_MCU_DEEP_SLEEP:
LCDPutStr("DEEP-SLEEP", MAX_X / 2 - 60, 10, WHITE, BLACK);
Chip_PMU_DeepSleepState(LPC_PMU);
break;
case PMU_MCU_POWER_DOWN:
LCDPutStr("POWER-DOWN", MAX_X / 2 - 60, 10, WHITE, BLACK);
Chip_PMU_PowerDownState(LPC_PMU);
break;
}
// start MRT timer channel 0
Chip_MRT_SetInterval(LPC_MRT_CH0, SystemCoreClock | MRT_INTVAL_LOAD);
Chip_MRT_SetMode(LPC_MRT_CH0,MRT_MODE_ONESHOT);
Chip_MRT_SetEnabled(LPC_MRT_CH0);
// turn on onboard LED
Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,false);
// start SCT
LPC_SCT->CTRL_L &= ~SCT_CTRL_HALT_L;
// wait for timeout
while(!RC5_timeout)
{};
// stop SCT
LPC_SCT->CTRL_L |= SCT_CTRL_HALT_L;
if (RC5_flag) {
// if frame received, output information on LCD
if((RC5_System != RC5_System_prev) || (RC5_Command != RC5_Command_prev)) {
cnt = 1;
}
else {
cnt++;
}
for (i = 3; i >= 0; i--){
LCDPutChar(ascii[(RC5_Frame >> (i * 4)) & 0x0F],MAX_X / 2 + 20,80+(3-i)*7,WHITE, BLACK);
if(i < 2) {
if((RC5_System!=RC5_System_prev) || (RC5_Command!=RC5_Command_prev)){
LCDPutChar(ascii[(RC5_System >> (i * 4)) & 0x0F],MAX_X / 2 + 5,66+(3-i)*7,WHITE, BLACK);
LCDPutChar(ascii[(RC5_Command >> (i * 4)) & 0x0F],MAX_X / 2 - 10,66+(3-i)*7,WHITE, BLACK);
}
}
LCDPutChar(ascii[(cnt >> (i * 4)) & 0x0F],MAX_X / 2 - 40,80+(3-i)*7,WHITE, BLACK);
}
LCDPutStr(RC5_Toggle ? "ON ":"OFF", MAX_X / 2 - 25, 80, WHITE, BLACK);
switch(RC5_Command) {
case 0x50:
mcupower = PMU_MCU_SLEEP;
break;
case 0x55:
if(RC5_Toggle){
spi0Transfer(SLEEPOUT);
spi0Transfer(DISPON);
}
else {
spi0Transfer(DISPOFF);
spi0Transfer(SLEEPIN);
}
break;
case 0x56:
mcupower = PMU_MCU_DEEP_SLEEP;
break;
case 0x6B:
mcupower = PMU_MCU_POWER_DOWN;
break;
}
RC5_System_prev = RC5_System;
RC5_Command_prev = RC5_Command;
}
// turn off onboard LED
Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,true);
// clear flags
RC5_flag = 0;
RC5_timeout = 0;
}