int main(void) {
initArray(&uartData, 5);
// Enable 80Mhz clock.
PLLInitialize(4);
// Use 1ms gradation for 80 Mhz clock.
SysTickInitialize(80000UL);
UARTInitialize(UART1Module, 115200, 80);
// Activate GPIO port B (Chip Select).
System_CTRL_RCGCGPIO_R |= System_CTRL_RCGCGPIO_GPIOB_MASK;
chipSelectPort->AFSEL &= ~chipSelectPin;
chipSelectPort->AMSEL &= ~chipSelectPin;
chipSelectPort->PCTL &= ~chipSelectPin;
chipSelectPort->DIR |= chipSelectPin;
chipSelectPort->DEN |= chipSelectPin;
Nokia5110_Init();
Nokia5110_Clear();
Nokia5110_WriteString("GPS");
toggleSensor();
// On the current hardware we receive to messages:
// 1. A0A20001470047B0B3 - SiRF IV: Hardware Configuration Request, MID_HW_CONFIG_REQ, unused.
// 2. A0A2000212000012B0B3 - OkToSend SiRF binary message.
while (1) {
if (uartData.used == 0) {
Nokia5110_Clear();
Nokia5110_WriteString("No data!");
} else {
char symbol[4];
for (uint32_t i = 0; i < uartData.used; i++) {
if (i % 17 == 0) {
SysTickDelay(5000);
Nokia5110_Clear();
}
sprintf(symbol, "_%02x_", uartData.array[i]);
Nokia5110_WriteString(symbol);
}
SysTickDelay(5000);
Nokia5110_Clear();
Nokia5110_WriteString("End of data!");
}
}
}
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
int32_t i;
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Init UART0 for printf */
UART0_Init();
/*
This is a simple sample code for LDROM in new IAP mode.
The base address is 0x100000.
The base address for function table is defined by FUN_TBL_BASE.
*/
printf("+------------------------------------------------------------------+\n");
printf("| M05xx Flash Memory Controller Driver Sample Code for LDROM |\n");
printf("+------------------------------------------------------------------+\n");
printf("\nCPU @ %dHz\n\n", SystemCoreClock);
// Delay 3 seconds
for(i = 0; i < 30; i++)
{
printf(".");
SysTickDelay(10000);
}
printf("\n");
printf("Function table @ 0x%08x\n", g_funcTable);
while(SYS->PDID)__WFI();
}
/**
* @brief Initialize the LCD to wrap at 16 chars,
* cursor off, and clear the screen.
*
* @param none
*
* @retval none
*/
void LCDInit(void)
{
// Wait for LCD to power up
SysTickDelay(ST_MS * 20);
LCD_DISPLAY_MODE(0x30);
LCD_CURSOR_MODE(0x32);
LCD_CLEAR();
}
/**
* @brief Gather input and return it as an 8-bit integer
*
* @param none
*
* @retval The nes controller input.
*
* 1 = Button pressed
* 0 = Button not pressed
*/
NesData GetInput(void)
{
int i = 1;
uint8_t temp_data; // Data grabbed from the controller
NesData data; // Final parsed controller data
NESPORT &= ~ALL_NES_PINS;
// Toggle latch pin
NESPORT |= NES_LATCH;
SysTickDelay(12 * ST_US);
NESPORT &= ~NES_LATCH;
// Grab A button data
temp_data = (NESPORT & NES_DATA) >> NES_DATA_S;
// Grab rest of data from controller
for(; i < 8; i++)
{
NESPORT |= NES_CLK;
SysTickDelay(6 * ST_US);
NESPORT &= ~NES_CLK;
temp_data |= ((NESPORT & NES_DATA) >> NES_DATA_S) << i;
SysTickDelay(6 * ST_US);
}
// Parse controller input and create NesData structure
data.A = temp_data & 1;
data.B = (temp_data >> 1) & 1;
data.Select= (temp_data >> 2) & 1;
data.Start = (temp_data >> 3) & 1;
data.Up = (temp_data >> 4) & 1;
data.Down = (temp_data >> 5) & 1;
data.Left = (temp_data >> 6) & 1;
data.Right = (temp_data >> 7) & 1;
return data;
}
void
Nokia5110_Init(void){
// Nokia 5110 LCD max clock frequency is 4Mhz, so with 50Mhz system clock,
// clock prescale divisor (must be even number) is calculated via
// SysClk/(CPSDVSR*(1+SCR)) formula, where SCR=0, so 50 / (14 * (1 + 0)) =
// 3.571 MHz (slower than 4 MHz).
InitializeSSI(SSI0Module, 14);
// 6 - command chooser pin, 7 - reset pin.
uint32_t servicePins = GPIO_PORT_PIN_6 | GPIO_PORT_PIN_7;
SERVICE_PORT->DIR |= servicePins;
SERVICE_PORT->AFSEL &= ~servicePins;
SERVICE_PORT->AMSEL &= ~servicePins;
SERVICE_PORT->DEN |= servicePins;
SERVICE_PORT->PCTL &= 0x00FFFFFF;
// Reset to a known state, wait for 100ms between writes.
SERVICE_PORT->PIN7 = 0x0;
SysTickDelay(100);
SERVICE_PORT->PIN7 = 0x80;
// Chip active;
// Horizontal addressing mode (V = 0);
// Use extended instruction set (H = 1).
writeCommand(0x21);
// Set LCD Vop (contrast), minimal contrast is 0xA0 and maximum is 0xCF.
writeCommand(0xB1);
// Set temp coefficient.
writeCommand(0x04);
// LCD bias mode 1:48: try 0x13 or 0x14.
writeCommand(0x14);
// We must send 0x20 before modifying the display control mode.
writeCommand(0x20);
// Set display control to normal mode: 0x0D for inverse.
writeCommand(0x0C);
}
void
toggleSensor() {
chipSelectPort->PIN2 = 0x1;
SysTickDelay(200);
chipSelectPort->PIN2 = 0x0;
}
int main(void) {
// Enable 80Mhz clock.
PLLInitialize(4);
// Use 1ms gradation for 80 Mhz clock.
SysTickInitialize(80000UL);
const ADC_PIN = GPIO_PORT_PIN_3;
const DAC_PINS = GPIO_PORT_PIN_0 | GPIO_PORT_PIN_1 | GPIO_PORT_PIN_2 |
GPIO_PORT_PIN_3 | GPIO_PORT_PIN_4 | GPIO_PORT_PIN_5 | GPIO_PORT_PIN_6 |
GPIO_PORT_PIN_7;
// Active ADC0.
System_CTRL_RCGCADC_R |= System_CTRL_RCGCADC_ADC0_MASK;
// Activate GPIO port B (DAC) and E (ADC).
System_CTRL_RCGCGPIO_R |= System_CTRL_RCGCGPIO_GPIOB_MASK | System_CTRL_RCGCGPIO_GPIOE_MASK;
unsigned long volatile delay;
// Activate Timer0
System_CTRL_RCGCTIMER_R |= System_CTRL_RCGCTIMER_TIMER0_MASK;
delay = System_CTRL_RCGCTIMER_R;
GPIOE->AFSEL |= ADC_PIN;
GPIOE->AMSEL |= ADC_PIN;
GPIOE->DIR &= ~ADC_PIN;
GPIOE->DEN &= ~ADC_PIN;
GPIOB->AFSEL &= ~DAC_PINS;
GPIOB->AMSEL &= ~DAC_PINS;
GPIOB->PCTL &= ~DAC_PINS;
GPIOB->DIR |= DAC_PINS;
GPIOB->DEN |= DAC_PINS;
// Sequencer 3 is highest priority.
ADC0->ADCSSPRI = 0x0123;
// Disable sample sequencer 3.
ADC0->ADCACTSS &= ~0x0008;
// Sequencer 3 is software trigger.
ADC0->ADCEMUX &= ~0xF000;
// Clear SS3 field, saying that AIN0 will be used.
ADC0->ADCSSMUX3 &= ~0x000F;
// No TS0 D0, yes IE0 END0.
ADC0->ADCSSCTL3 = 0x0006;
// Enable sample sequencer 3.
ADC0->ADCACTSS |= 0x0008;
// Disable Timer0.
Timer0->GPTMCTL = 0x0UL;
// Choose 32 bit mode.
Timer0->GPTMCFG = 0x0UL;
// Choose periodic mode.
Timer0->GPTMTAMR = 0x2UL;
// Reload value
Timer0->GPTMTAILR = 7256;
// Clock resolution
Timer0->GPTMTAPR = 0;
// Clear timeout flag
Timer0->GPTMICR = 0x1UL;
// Arm timeout
Timer0->GPTMIMR = 0x1UL;
// Timer0A is 35th in vector table, interrupt number is 19.
// Setting priority 4 (100, last 3 bits).
NVIC->PRI4 = (NVIC->PRI4 & 0x00FFFFFF) | 0x80000000;
// Enable IRQ 19
NVIC->EN0 = 1 << 19;
// Enable Timer0A
Timer0->GPTMCTL = 0x1UL;
Nokia5110_Init();
Nokia5110_Clear();
while (1) {
Nokia5110_Clear();
Nokia5110_WriteDec(ReadADC0());
SysTickDelay(1000);
}
}
