void uart_init(void)
{
/* Disable interrupts */
out32(UART_BASE + UART_OFFSET_IDR, UART_IXR_MASK);
/* Disable TX and RX */
uart_disable();
/* Reset TX and RX, Clear FIFO */
out32(UART_BASE + UART_OFFSET_CR, UART_CR_TXRST | UART_CR_RXRST);
/* Clear Flags */
out32(UART_BASE + UART_OFFSET_ISR, UART_IXR_MASK);
/* Mode Reset to Normal/8-N-1 */
out32(UART_BASE + UART_OFFSET_MR,
UART_MR_CHMODE_NORM | UART_MR_CHARLEN_8_BIT |
UART_MR_PARITY_NONE | UART_MR_STOPMODE_1_BIT);
/* Trigger Reset */
out32(UART_BASE + UART_OFFSET_RXWM, UART_RXWM_RESET_VAL);
out32(UART_BASE + UART_OFFSET_TXWM, UART_TXWM_RESET_VAL);
/* Disable RX timeout */
out32(UART_BASE + UART_OFFSET_RXTOUT, UART_RXTOUT_DISABLE);
/* Reset baud rate generator and divider to genetate 115200 */
out32(UART_BASE + UART_OFFSET_BAUDGEN, 0x3E);
out32(UART_BASE + UART_OFFSET_BAUDDIV, 0x06);
/* Set CR Value */
out32(UART_BASE + UART_OFFSET_CR,
UART_CR_RX_DIS | UART_CR_TX_DIS | UART_CR_STOPBRK);
}
void usbuart_init(void)
{
UART_PIN_SETUP();
periph_clock_enable(USBUART_CLK);
__asm__("nop"); __asm__("nop"); __asm__("nop");
uart_disable(USBUART);
/* Setup UART parameters. */
uart_clock_from_sysclk(USBUART);
uart_set_baudrate(USBUART, 38400);
uart_set_databits(USBUART, 8);
uart_set_stopbits(USBUART, 1);
uart_set_parity(USBUART, UART_PARITY_NONE);
// Enable FIFO
uart_enable_fifo(USBUART);
// Set FIFO interrupt trigger levels to 1/8 full for RX buffer and
// 7/8 empty (1/8 full) for TX buffer
uart_set_fifo_trigger_levels(USBUART, UART_FIFO_RX_TRIG_1_8, UART_FIFO_TX_TRIG_7_8);
uart_clear_interrupt_flag(USBUART, UART_INT_RX | UART_INT_RT);
/* Enable interrupts */
uart_enable_interrupts(UART0, UART_INT_RX| UART_INT_RT);
/* Finally enable the USART. */
uart_enable(USBUART);
//nvic_set_priority(USBUSART_IRQ, IRQ_PRI_USBUSART);
nvic_enable_irq(USBUART_IRQ);
}
static void uart_setup(void)
{
u32 pins;
/* Enable GPIOA in run mode. */
periph_clock_enable(RCC_GPIOA);
/* Configure PA0 and PA1 as alternate function pins */
pins = GPIO0 | GPIO1;
GPIO_AFSEL(GPIOA) |= pins;
GPIO_DEN(GPIOA) |= pins;
/* PA0 and PA1 are muxed to UART0 during power on, by default */
/* Enable the UART clock */
periph_clock_enable(RCC_UART0);
/* We need a brief delay before we can access UART config registers */
__asm__("nop");
/* Disable the UART while we mess with its setings */
uart_disable(UART0);
/* Configure the UART clock source as precision internal oscillator */
uart_clock_from_piosc(UART0);
/* Set communication parameters */
uart_set_baudrate(UART0, 921600);
uart_set_databits(UART0, 8);
uart_set_parity(UART0, UART_PARITY_NONE);
uart_set_stopbits(UART0, 1);
/* Now that we're done messing with the settings, enable the UART */
uart_enable(UART0);
}
static void update_host_wake_locked(int host_wake)
{
if (host_wake == bt_lpm.host_wake)
return;
bt_lpm.host_wake = host_wake;
if (host_wake) {
wake_lock(&bt_lpm.wake_lock);
if (!host_wake_uart_enabled) {
WARN_ON(!bt_lpm.tty_dev);
uart_enable(bt_lpm.tty_dev);
}
} else {
if (host_wake_uart_enabled) {
WARN_ON(!bt_lpm.tty_dev);
uart_disable(bt_lpm.tty_dev);
}
/*
* Take a timed wakelock, so that upper layers can take it.
* The chipset deasserts the hostwake lock, when there is no
* more data to send.
*/
wake_lock_timeout(&bt_lpm.wake_lock, HZ/2);
}
host_wake_uart_enabled = host_wake;
}
void platform_disable_uart()
{
// Set pins analog and disable the print UART
gpio_set_analog(GPIO_A, GPIO_PIN_9);
gpio_set_analog(GPIO_A, GPIO_PIN_10);
uart_disable(uart_print);
}
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
uart_timer_configure();
uart_init();
_enable_interrupts();
uart_puts("\n\r***************\n\r");
uart_puts("MSP430 SunV2\n\r");
uart_puts("***************\n\r\n\r");
uint8_t c;
// Timeshare between UART and dimming
while(1) {
if(uart_getc(&c)) {
if(c == '\r') {
uart_putc('\n');
uart_putc('\r');
} else {
uart_putc('[');
uart_putc(c);
uart_putc(']');
// Clear UART configuration
_disable_interrupts();
timer_deconfigure();
uart_disable();
uart_timerA_disable();
switch (c)
{
case 'w':
turnOn();
break;
case 's':
turnOff();
break;
case 'r':
remember();
break;
case 'd':
dimUp();
break;
case 'a':
dimDown();
break;
}
// UART configuration
art_init();
timer_deconfigure();
uart_timer_configure();
uart_timerA_enable();
_enable_interrupts();
}
}
}
}
/**
* \brief This function closes and disables communication in the specified UART.
*
* \param chn Communication channel [0, 1]
*
* \retval true on success.
* \retval false on failure.
*/
int8_t buart_if_close(uint8_t chn)
{
if (!buart_chn_open[chn]) {
return false;
}
switch (chn) {
#ifdef CONF_BOARD_UART0
case 0:
{
uart_disable(UART0);
uart_disable_interrupt(UART0, US_IDR_RXRDY);
uart_disable_interrupt(UART0, US_IER_ENDRX);
/* Stop TC */
if (!buart_chn_open[1]) {
tc_stop(TC_UART, TC_UART_CHN);
}
return true;
}
break;
#endif
#ifdef CONF_BOARD_UART1
case 1:
{
uart_disable(UART1);
uart_disable_interrupt(UART1, US_IDR_RXRDY);
uart_disable_interrupt(UART1, US_IER_ENDRX);
/* Stop TC */
if (!buart_chn_open[0]) {
tc_stop(TC_UART, TC_UART_CHN);
}
return true;
}
break;
#endif
default:
return false;
}
}
int16_t uart_driver_close(device_id_t device)
{
registered_uart_t* reg = uart_get_registered(device);
if (reg != NULL)
{
reg->used=FALSE;
uart_disable(reg->uart_port);
}
return 0;
}
void uart_set_baudrate(unsigned long baud)
{
uart_disable();
// Set the baud rate
// BRG = freq/( baud * 16)
U0BR = FREQ/((unsigned long)baud * 16UL);
baudrate = baud;
uart_enable();
}
void measure_rpm() {
while(uart_tx_active == 1){} // wait for pending uart transmission to finish
uart_disable();
measure_channel_rpm(0); // channel 1
measure_channel_rpm(1); // channel 2
measure_channel_rpm(2); // channel 3
//measure_channel_rpm(3); // channel 4
uart_enable();
}
void uart_set_bits(const char *value)
{
uart_disable();
if(strcmp(value, UART_BIT7) == 0) {
U0CTL0 &= ~UART_TWO_STOP;
}
else if(strcmp(value, UART_BIT8) == 0) {
U0CTL0 |= UART_TWO_STOP;
}
uart_enable();
}
int glue_set_line_coding_cb(uint32_t baud, uint8_t databits,
enum usb_cdc_line_coding_bParityType cdc_parity,
enum usb_cdc_line_coding_bCharFormat cdc_stopbits)
{
enum uart_parity parity;
uint8_t uart_stopbits;
if (databits < 5 || databits > 8)
return 0;
switch (cdc_parity) {
case USB_CDC_NO_PARITY:
parity = UART_PARITY_NONE;
break;
case USB_CDC_ODD_PARITY:
parity = UART_PARITY_ODD;
break;
case USB_CDC_EVEN_PARITY:
parity = UART_PARITY_EVEN;
break;
default:
return 0;
}
switch (cdc_stopbits) {
case USB_CDC_1_STOP_BITS:
uart_stopbits = 1;
break;
case USB_CDC_2_STOP_BITS:
uart_stopbits = 2;
break;
default:
return 0;
}
/* Disable the UART while we mess with its settings */
uart_disable(UART1);
/* Set communication parameters */
uart_set_baudrate(UART1, baud);
uart_set_databits(UART1, databits);
uart_set_parity(UART1, parity);
uart_set_stopbits(UART1, uart_stopbits);
/* Back to work. */
uart_enable(UART1);
return 1;
}
void uart_set_parity(const char *value)
{
uart_disable();
if(strcmp(value, UART_EVEN) == 0) {
U0CTL0 |= UART_PARITY_EN;
U0CTL0 &= ~UART_PARITY_ODD;
}
else if(strcmp(value, UART_ODD) == 0) {
U0CTL0 |= UART_PARITY_EN | UART_PARITY_ODD;
}
else if(strcmp(value, UART_NONE) == 0) {
U0CTL0 &= ~UART_PARITY_EN;
}
uart_enable();
}
static void set_wake_locked(int wake)
{
bt_lpm.wake = wake;
if (!wake)
wake_unlock(&bt_lpm.wake_lock);
if (!wake_uart_enabled && wake) {
WARN_ON(!bt_lpm.tty_dev);
uart_enable(bt_lpm.tty_dev);
}
gpio_set_value(bt_lpm.gpio_wake, wake);
if (wake_uart_enabled && !wake) {
WARN_ON(!bt_lpm.tty_dev);
uart_disable(bt_lpm.tty_dev);
}
wake_uart_enabled = wake;
}
void traceswo_init(void)
{
periph_clock_enable(RCC_GPIOD);
periph_clock_enable(TRACEUART_CLK);
__asm__("nop"); __asm__("nop"); __asm__("nop");
gpio_mode_setup(SWO_PORT, GPIO_MODE_INPUT, GPIO_PUPD_NONE, SWO_PIN);
gpio_set_af(SWO_PORT, 1, SWO_PIN); /* U2RX */
uart_disable(TRACEUART);
/* Setup UART parameters. */
uart_clock_from_sysclk(TRACEUART);
uart_set_baudrate(TRACEUART, 800000);
uart_set_databits(TRACEUART, 8);
uart_set_stopbits(TRACEUART, 1);
uart_set_parity(TRACEUART, UART_PARITY_NONE);
// Enable FIFO
uart_enable_fifo(TRACEUART);
// Set FIFO interrupt trigger levels to 4/8 full for RX buffer and
// 7/8 empty (1/8 full) for TX buffer
uart_set_fifo_trigger_levels(TRACEUART, UART_FIFO_RX_TRIG_1_2, UART_FIFO_TX_TRIG_7_8);
uart_clear_interrupt_flag(TRACEUART, UART_INT_RX | UART_INT_RT);
/* Enable interrupts */
uart_enable_interrupts(TRACEUART, UART_INT_RX | UART_INT_RT);
/* Finally enable the USART. */
uart_enable(TRACEUART);
nvic_set_priority(TRACEUART_IRQ, 0);
nvic_enable_irq(TRACEUART_IRQ);
/* Un-stall USB endpoint */
usbd_ep_stall_set(usbdev, 0x85, 0);
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO3);
}
static void uart_setup(void)
{
/* Enable GPIOA in run mode. */
periph_clock_enable(RCC_GPIOA);
/* Mux PA0 and PA1 to UART0 (alternate function 1) */
gpio_set_af(GPIOA, 1, GPIO0 | GPIO1);
/* Enable the UART clock */
periph_clock_enable(RCC_UART0);
/* We need a brief delay before we can access UART config registers */
__asm__("nop");
/* Disable the UART while we mess with its setings */
uart_disable(UART0);
/* Configure the UART clock source as precision internal oscillator */
uart_clock_from_piosc(UART0);
/* Set communication parameters */
uart_set_baudrate(UART0, 921600);
uart_set_databits(UART0, 8);
uart_set_parity(UART0, UART_PARITY_NONE);
uart_set_stopbits(UART0, 1);
/* Now that we're done messing with the settings, enable the UART */
uart_enable(UART0);
}
int
main(void)
{
int i, j, k, l;
unsigned button[3];
unsigned steps[3];
unsigned hz;
/*-------------------------------------------------------------
* First things first: Start the watchdog
*/
fido_setup(0x1000);
/*-------------------------------------------------------------
* Setup GPIO
*/
LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 6); // GPIO
LPC_SYSCON->PRESETCTRL &= ~(1 << 10); // GPIO reset
LPC_SYSCON->PRESETCTRL |= (1 << 10);
LPC_IOCON->PIO0_0 = 0
| (1 << 3) // Pull down
| (1 << 5) // Hysteresis
;
LPC_IOCON->PIO0_1 = 0
| (2 << 3) // Pull up
| (1 << 5) // Hysteresis
;
LPC_IOCON->PIO0_2 = 0
| (2 << 3) // Pull up
| (1 << 5) // Hysteresis
;
LPC_IOCON->PIO0_3 = 0
| (2 << 3) // Pull up
| (1 << 5) // Hysteresis
;
LPC_IOCON->PIO0_5 = 0
| (2 << 3) // Pull up
| (1 << 5) // Hysteresis
;
/*-------------------------------------------------------------
* Provide a chance to enter the boot-loader
*/
check_bootloader();
/*-------------------------------------------------------------
* Enable UART for startup-debugging
*/
uart0Init(115200);
uart_enable();
/*-------------------------------------------------------------
* Start timer
*/
mrtInit(__SYSTEM_CLOCK/1000);
/*-------------------------------------------------------------
* Enable reset pin
*/
LPC_SWM->PINENABLE0 = ~(1 << 6); // PIO0_5 RESET_EN
/*-------------------------------------------------------------
* Hello World
*/
welcome();
/*-------------------------------------------------------------
* Detect pin-configuration by counting edges on the two possible
* possible clock inputs.
*
* If neither is active the watch-dog will trigger.
*/
do {
/* Measure input frequency on PIO0_1 and PIO0_2 */
for (i = 1; i < 3; i++) {
sct_setup(i);
k = LPC_SCT->COUNT_U;
mrtDelay(100);
l = LPC_SCT->COUNT_U;
hz = 10 * (l-k);
printf("Rate PIO0_%d = %u\r\n", i, hz);
if (hz > 1000)
break;
}
} while (hz < 1000);
/*-------------------------------------------------------------
* Configure counter
*/
mrtDelay(100);
printf("Using PIO0_%d\r\n", i);
mrtDelay(100);
uart_disable();
button[0] = 1<<(3-i); steps[0] = 1;
button[1] = 1<<3; steps[1] = 60;
button[2] = 1<<5; steps[2] = 3600;
if (i == 1) {
LPC_SWM->PINENABLE0 &= ~(1 << 7); // Enable CLKIN
LPC_SYSCON->MAINCLKSEL = 0x1; // PLL input
LPC_SYSCON->MAINCLKUEN = 0x0;
LPC_SYSCON->MAINCLKUEN = 0x1;
LPC_SYSCON->SYSPLLCLKSEL = 0x3; // CLKIN
LPC_SYSCON->SYSPLLCLKUEN = 0x0;
LPC_SYSCON->SYSPLLCLKUEN = 0x1;
LPC_SYSCON->SYSAHBCLKDIV = 1;
sct_setup(0xff);
mrtInit(FREQ/1000);
/* Calibrated to look like 0x00 at 115200 bps */
pulse_lo = 29;
pulse_hi = 10;
} else {
sct_setup(2);
}
sct_output(4);
/*-------------------------------------------------------------
* Until the clock is set, have it run 11 times too fast
*/
while (1) {
fido_pat();
if (!(LPC_GPIO_PORT->PIN0 & button[0]))
break;
if (!(LPC_GPIO_PORT->PIN0 & button[1]))
break;
if (!(LPC_GPIO_PORT->PIN0 & button[2]))
break;
mrtDelay(100);
run_pulse();
}
LPC_SWM->PINENABLE0 |= (1 << 6); // Disable RESET
j = 0;
while(1) {
if (j == 0 && LPC_SCT->COUNT_U < 10000) {
fido_pat();
j = 1;
}
if (j == 1 && LPC_SCT->COUNT_U > 10000) {
j = 0;
}
for (i = 0; i < 3; i++) {
if (LPC_GPIO_PORT->PIN0 & button[i])
continue;
fido_pat();
for(k = 0; k < steps[i]; k++)
run_pulse();
if (i > 0) {
/*
* Min/Hour button release
* If you hold them for 10+ seconds
* The watch-dog bites
*/
for(k = 0; k < 1000; k++) {
if (LPC_GPIO_PORT->PIN0 & button[i])
continue;
k = 0;
}
continue;
}
/* Check if the Sec button is held for >1s */
mrt_counter = 0;
for(k = 0; k < 1000; k++) {
if (LPC_GPIO_PORT->PIN0 & button[i])
break;
if (mrt_counter > 1000)
break;
k = 0;
}
if (k == 1000)
continue;
/* Stop counter */
sct_stop();
/*
* Restart counter on button release
* or sync input
*/
for(k = 0; k < 1000; k++) {
if (LPC_GPIO_PORT->PIN0 & button[i])
break;
l = LPC_GPIO_PORT->PIN0 & (1<<0);
if (l)
k = 0;
}
l = (1 << 0) | button[i];
while (!(LPC_GPIO_PORT->PIN0 & l))
continue;
/*
* Calibrated for falling edge = PPI rising edge
* PPSO comes 164ns after PPS1
*/
LPC_SCT->COUNT_U = FREQ - 366;
LPC_SCT->CTRL_L &= ~(1 << 2); // Start
for(k = 0; k < 1000; k++) {
if (LPC_GPIO_PORT->PIN0 & button[i])
continue;
k = 0;
}
}
}
}
void msg_disableRx(void)
{
uart_disable();
rf_setMode(RF_MODE_SLEEP);
}
uart_recv_interrupt() {
uart_disable();
}
uart_send_interrupt() {
uart_disable();
}
