void serial_init(serial_t *obj, PinName tx, PinName rx) {
int is_stdio_uart = 0;
// determine the UART to use
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
UARTName uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
if ((int)uart == NC) {
error("Serial pinout mapping failed");
}
obj->uart = (LPC_UART_TypeDef *)uart;
// enable power
switch (uart) {
case UART_0: LPC_SC->PCONP |= 1 << 3; break;
case UART_1: LPC_SC->PCONP |= 1 << 4; break;
case UART_2: LPC_SC->PCONP |= 1 << 24; break;
case UART_3: LPC_SC->PCONP |= 1 << 25; break;
}
// enable fifos and default rx trigger level
obj->uart->FCR = 1 << 0 // FIFO Enable - 0 = Disables, 1 = Enabled
| 0 << 1 // Rx Fifo Reset
| 0 << 2 // Tx Fifo Reset
| 0 << 6; // Rx irq trigger level - 0 = 1 char, 1 = 4 chars, 2 = 8 chars, 3 = 14 chars
// disable irqs
obj->uart->IER = 0 << 0 // Rx Data available irq enable
| 0 << 1 // Tx Fifo empty irq enable
| 0 << 2; // Rx Line Status irq enable
// set default baud rate and format
serial_baud (obj, 9600);
serial_format(obj, 8, ParityNone, 1);
// pinout the chosen uart
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
// set rx/tx pins in PullUp mode
pin_mode(tx, PullUp);
pin_mode(rx, PullUp);
switch (uart) {
case UART_0: obj->index = 0; break;
case UART_1: obj->index = 1; break;
case UART_2: obj->index = 2; break;
case UART_3: obj->index = 3; break;
}
uart_data[obj->index].sw_rts.pin = NC;
uart_data[obj->index].sw_cts.pin = NC;
serial_set_flow_control(obj, FlowControlNone, NC, NC);
is_stdio_uart = (uart == STDIO_UART) ? (1) : (0);
if (is_stdio_uart) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void serial_init(serial_t *obj, PinName tx, PinName rx)
{
uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
obj->index = pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)obj->index != NC);
serial_setup_clock();
lpuart_config_t config;
LPUART_GetDefaultConfig(&config);
config.baudRate_Bps = 9600;
config.enableTx = false;
config.enableRx = false;
LPUART_Init(uart_addrs[obj->index], &config, serial_get_clock());
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
LPUART_EnableTx(uart_addrs[obj->index], true);
pin_mode(tx, PullDefault);
}
if (rx != NC) {
LPUART_EnableRx(uart_addrs[obj->index], true);
pin_mode(rx, PullDefault);
}
if (obj->index == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
// determine the SPI to use
I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
obj->i2c = (LPC_I2C_TypeDef *)pinmap_merge(i2c_sda, i2c_scl);
MBED_ASSERT((int)obj->i2c != NC);
// enable power
i2c_power_enable(obj);
// set default frequency at 100k
i2c_frequency(obj, 100000);
i2c_conclr(obj, 1, 1, 1, 1);
i2c_interface_enable(obj);
pinmap_pinout(sda, PinMap_I2C_SDA);
pinmap_pinout(scl, PinMap_I2C_SCL);
// OpenDrain must explicitly be enabled for p0.0 and p0.1
if (sda == P0_0) {
pin_mode(sda, OpenDrain);
}
if (scl == P0_1) {
pin_mode(scl, OpenDrain);
}
}
void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
// Determine the I2C to use
I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
obj->i2c = (I2CName)pinmap_merge(i2c_sda, i2c_scl);
MBED_ASSERT(obj->i2c != (I2CName)NC);
// Enable I2C clock
if (obj->i2c == I2C_1) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);
}
if (obj->i2c == I2C_2) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
}
// Configure I2C pins
pinmap_pinout(scl, PinMap_I2C_SCL);
pin_mode(scl, OpenDrain);
pinmap_pinout(sda, PinMap_I2C_SDA);
pin_mode(sda, OpenDrain);
// Reset to clear pending flags if any
i2c_reset(obj);
// I2C configuration
i2c_frequency(obj, 100000); // 100 kHz per default
}
void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
// determine the SPI to use
I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
obj->i2c = (I2C_TypeDef *)pinmap_merge(i2c_sda, i2c_scl);
MBED_ASSERT((int)obj->i2c != NC);
// enable power
i2c_power_enable(obj);
pinmap_pinout(sda, PinMap_I2C_SDA);
pinmap_pinout(scl, PinMap_I2C_SCL);
pin_mode(sda, OpenDrain);
pin_mode(scl, OpenDrain);
// Force reset if the bus is stuck in the BUSY state
if (obj->i2c->SR2 & I2C_SR2_BUSY) {
obj->i2c->CR1 |= I2C_CR1_SWRST;
obj->i2c->CR1 &= ~I2C_CR1_SWRST;
}
// Set the peripheral clock frequency
obj->i2c->CR2 |= 42;
// set default frequency at 100k
i2c_frequency(obj, 100000);
i2c_interface_enable(obj);
}
void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
{
if (type == FlowControlRTSCTS || type == FlowControlRTS) {
NRF_GPIO->DIR |= (1<<rxflow);
pin_mode(rxflow, PullUp);
obj->uart->PSELRTS = rxflow;
obj->uart->CONFIG |= 0x01; // Enable HWFC
}
if (type == FlowControlRTSCTS || type == FlowControlCTS) {
NRF_GPIO->DIR &= ~(1<<txflow);
pin_mode(txflow, PullUp);
obj->uart->PSELCTS = txflow;
obj->uart->CONFIG |= 0x01; // Enable HWFC;
}
if (type == FlowControlNone) {
obj->uart->PSELRTS = 0xFFFFFFFF; // Disable RTS
obj->uart->PSELCTS = 0xFFFFFFFF; // Disable CTS
obj->uart->CONFIG &= ~0x01; // Enable HWFC;
}
}
void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
// Determine the I2C to use
I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
obj->i2c = (I2CName)pinmap_merge(i2c_sda, i2c_scl);
if (obj->i2c == (I2CName)NC) {
error("I2C error: pinout mapping failed.");
}
// Enable I2C clock
if (obj->i2c == I2C_1) {
__HAL_RCC_I2C1_CONFIG(RCC_I2C1CLKSOURCE_SYSCLK);
__I2C1_CLK_ENABLE();
}
if (obj->i2c == I2C_2) {
__I2C2_CLK_ENABLE();
}
// Configure I2C pins
pinmap_pinout(sda, PinMap_I2C_SDA);
pinmap_pinout(scl, PinMap_I2C_SCL);
pin_mode(sda, OpenDrain);
pin_mode(scl, OpenDrain);
// Reset to clear pending flags if any
i2c_reset(obj);
// I2C configuration
i2c_frequency(obj, 100000); // 100 kHz per default
}
void gpio_pin_enable(gpio_t *obj, uint8_t enable)
{
if (enable) {
pin_mode(obj->pin, obj->mode);
} else {
pin_mode(obj->pin, Disabled); // TODO_LP return mode to default value
}
}
void
spiflash_pins_init(void)
{
pin_mode(PIN_PTC0, PIN_MODE_MUX_ALT2);
pin_mode(PIN_PTC5, PIN_MODE_MUX_ALT2);
pin_mode(PIN_PTC6, PIN_MODE_MUX_ALT2);
pin_mode(PIN_PTC7, PIN_MODE_MUX_ALT2);
}
void can_init(can_t *obj, PinName rd, PinName td)
{
CANName can_rd = (CANName)pinmap_peripheral(rd, PinMap_CAN_RD);
CANName can_td = (CANName)pinmap_peripheral(td, PinMap_CAN_TD);
obj->can = (CANName)pinmap_merge(can_rd, can_td);
MBED_ASSERT((int)obj->can != NC);
if (obj->can == CAN_1) {
__HAL_RCC_CAN1_CLK_ENABLE();
obj->index = 0;
}
#if defined(CAN2_BASE) && (CAN_NUM == 2)
else if (obj->can == CAN_2) {
__HAL_RCC_CAN1_CLK_ENABLE(); // needed to set filters
__HAL_RCC_CAN2_CLK_ENABLE();
obj->index = 1;
}
#endif
else {
return;
}
// Configure the CAN pins
pinmap_pinout(rd, PinMap_CAN_RD);
pinmap_pinout(td, PinMap_CAN_TD);
if (rd != NC) {
pin_mode(rd, PullUp);
}
if (td != NC) {
pin_mode(td, PullUp);
}
CanHandle.Instance = (CAN_TypeDef *)(obj->can);
CanHandle.Init.TTCM = DISABLE;
CanHandle.Init.ABOM = DISABLE;
CanHandle.Init.AWUM = DISABLE;
CanHandle.Init.NART = DISABLE;
CanHandle.Init.RFLM = DISABLE;
CanHandle.Init.TXFP = DISABLE;
CanHandle.Init.Mode = CAN_MODE_NORMAL;
CanHandle.Init.SJW = CAN_SJW_1TQ;
CanHandle.Init.BS1 = CAN_BS1_6TQ;
CanHandle.Init.BS2 = CAN_BS2_8TQ;
CanHandle.Init.Prescaler = 2;
if (HAL_CAN_Init(&CanHandle) != HAL_OK) {
error("Cannot initialize CAN");
}
// Set initial CAN frequency to 100 kb/s
can_frequency(obj, 100000);
uint32_t filter_number = (obj->can == CAN_1) ? 0 : 14;
can_filter(obj, 0, 0, CANStandard, filter_number);
}
void serial_init(serial_t *obj, PinName tx, PinName rx)
{
// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT(obj->uart != (UARTName)NC);
// Enable UART clock
if (obj->uart == UART_1) {
__USART1_FORCE_RESET();
__USART1_RELEASE_RESET();
__HAL_RCC_USART1_CLK_ENABLE();
obj->index = 0;
}
if (obj->uart == UART_2) {
__USART2_FORCE_RESET();
__USART2_RELEASE_RESET();
__HAL_RCC_USART2_CLK_ENABLE();
obj->index = 1;
}
if (obj->uart == UART_3) {
__USART3_FORCE_RESET();
__USART3_RELEASE_RESET();
__HAL_RCC_USART3_CLK_ENABLE();
obj->index = 2;
}
// Configure UART pins
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
// Configure UART
obj->baudrate = 9600;
obj->databits = UART_WORDLENGTH_8B;
obj->stopbits = UART_STOPBITS_1;
obj->parity = UART_PARITY_NONE;
obj->pin_tx = tx;
obj->pin_rx = rx;
init_uart(obj);
// For stdio management
if (obj->uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void pwmout_enable_pins(pwmout_t *obj, uint8_t enable)
{
if (enable) {
pin_mode(obj->pin, PushPull);
} else {
// TODO_LP return PinMode to the previous state
pin_mode(obj->pin, Disabled);
}
}
static void
disable_power(void)
{
pin_mode(EZPORT_CS, PIN_MODE_MUX_ANALOG);
pin_mode(EZPORT_CLK, PIN_MODE_MUX_ANALOG);
pin_mode(EZPORT_DI, PIN_MODE_MUX_ANALOG);
pin_mode(EZPORT_DO, PIN_MODE_MUX_ANALOG);
pin_mode(EZPORT_POWER, PIN_MODE_MUX_ANALOG);
}
USBHAL::USBHAL(void) {
NVIC_DisableIRQ(OTG_FS_IRQn);
epCallback[0] = &USBHAL::EP1_OUT_callback;
epCallback[1] = &USBHAL::EP1_IN_callback;
epCallback[2] = &USBHAL::EP2_OUT_callback;
epCallback[3] = &USBHAL::EP2_IN_callback;
epCallback[4] = &USBHAL::EP3_OUT_callback;
epCallback[5] = &USBHAL::EP3_IN_callback;
// Enable power and clocking
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
#if defined(TARGET_STM32F407VG) || defined(TARGET_STM32F401RE) || defined(TARGET_STM32F411RE) || defined(TARGET_STM32F412ZG) || defined(TARGET_STM32F429ZI)
pin_function(PA_8, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
pin_function(PA_9, STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLDOWN, GPIO_AF10_OTG_FS));
pin_function(PA_10, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS));
pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
pin_function(PA_12, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
#else
pin_function(PA_8, STM_PIN_DATA(2, 10));
pin_function(PA_9, STM_PIN_DATA(0, 0));
pin_function(PA_10, STM_PIN_DATA(2, 10));
pin_function(PA_11, STM_PIN_DATA(2, 10));
pin_function(PA_12, STM_PIN_DATA(2, 10));
// Set ID pin to open drain with pull-up resistor
pin_mode(PA_10, OpenDrain);
GPIOA->PUPDR &= ~(0x3 << 20);
GPIOA->PUPDR |= 1 << 20;
// Set VBUS pin to open drain
pin_mode(PA_9, OpenDrain);
#endif
RCC->AHB2ENR |= RCC_AHB2ENR_OTGFSEN;
// Enable interrupts
OTG_FS->GREGS.GAHBCFG |= (1 << 0);
// Turnaround time to maximum value - too small causes packet loss
OTG_FS->GREGS.GUSBCFG |= (0xF << 10);
// Unmask global interrupts
OTG_FS->GREGS.GINTMSK |= (1 << 3) | // SOF
(1 << 4) | // RX FIFO not empty
(1 << 12); // USB reset
OTG_FS->DREGS.DCFG |= (0x3 << 0) | // Full speed
(1 << 2); // Non-zero-length status OUT handshake
OTG_FS->GREGS.GCCFG |= (1 << 19) | // Enable VBUS sensing
(1 << 16); // Power Up
instance = this;
NVIC_SetVector(OTG_FS_IRQn, (uint32_t)&_usbisr);
NVIC_SetPriority(OTG_FS_IRQn, 1);
}
static void
enable_spi(void)
{
spi_init();
pin_mode(EZPORT_CS, PIN_MODE_MUX_ALT2);
pin_mode(EZPORT_CLK, PIN_MODE_MUX_ALT2);
pin_mode(EZPORT_DI, PIN_MODE_MUX_ALT2);
pin_mode(EZPORT_DO, PIN_MODE_MUX_ALT2);
}
void spi_init(void) {
pin_mode(SCLK, OUTPUT);
pin_mode(MOSI, OUTPUT);
pin_mode(SS, OUTPUT); /* Should be output in Master mode. */
SPCR &= ~(_BV(DORD)); /* MSB first. */
SPCR |= _BV(MSTR); /* Act as master. */
SPCR |= _BV(SPE); /* Enable SPI. */
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
int is_stdio_uart = 0;
// determine the UART to use
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
UARTName uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)uart != NC);
obj->uart = (LPC_USART_Type *)uart;
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12);
// [TODO] Consider more elegant approach
// disconnect USBTX/RX mapping mux, for case when switching ports
#ifdef USBTX
pin_function(USBTX, 0);
pin_function(USBRX, 0);
#endif
// enable fifos and default rx trigger level
obj->uart->FCR = 1 << 0 // FIFO Enable - 0 = Disables, 1 = Enabled
| 0 << 1 // Rx Fifo Reset
| 0 << 2 // Tx Fifo Reset
| 0 << 6; // Rx irq trigger level - 0 = 1 char, 1 = 4 chars, 2 = 8 chars, 3 = 14 chars
// disable irqs
obj->uart->IER = 0 << 0 // Rx Data available irq enable
| 0 << 1 // Tx Fifo empty irq enable
| 0 << 2; // Rx Line Status irq enable
// set default baud rate and format
serial_baud (obj, 9600);
serial_format(obj, 8, ParityNone, 1);
// pinout the chosen uart
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
// set rx/tx pins in PullUp mode
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
switch (uart) {
case UART_0: obj->index = 0; break;
}
is_stdio_uart = (uart == STDIO_UART) ? (1) : (0);
if (is_stdio_uart) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
if (obj->uart == (UARTName)NC) {
error("Serial pinout mapping failed");
}
// Enable USART clock
if (obj->uart == UART_1) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
}
if (obj->uart == UART_2) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
}
if (obj->uart == UART_3) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
}
if (obj->uart == UART_4) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);
}
if (obj->uart == UART_5) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);
}
// Configure the UART pins
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
pin_mode(tx, PullUp);
pin_mode(rx, PullUp);
// Configure UART
obj->baudrate = 9600;
obj->databits = USART_WordLength_8b;
obj->stopbits = USART_StopBits_1;
obj->parity = USART_Parity_No;
init_usart(obj);
// The index is used by irq
if (obj->uart == UART_1) obj->index = 0;
if (obj->uart == UART_2) obj->index = 1;
if (obj->uart == UART_3) obj->index = 2;
if (obj->uart == UART_4) obj->index = 3;
if (obj->uart == UART_5) obj->index = 4;
// For stdio management
if (obj->uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void i2c_enable_pins(i2c_t *obj, uint8_t enable)
{
if (enable) {
pin_mode(obj->i2c.scl, WiredAndPullUp);
pin_mode(obj->i2c.sda, WiredAndPullUp);
} else {
// TODO_LP return PinMode to the previous state
pin_mode(obj->i2c.sda, Disabled);
pin_mode(obj->i2c.scl, Disabled);
}
}
void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
if(pin == NC) return;
obj->pin = pin;
obj->mask = gpio_set(pin);
#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)pin & ~0x1F);
obj->reg_set = &port_reg->FIOSET;
obj->reg_clr = &port_reg->FIOCLR;
obj->reg_in = &port_reg->FIOPIN;
obj->reg_dir = &port_reg->FIODIR;
#elif defined(TARGET_LPC11U24)
unsigned int port = (unsigned int)pin >> PORT_SHIFT;
obj->reg_set = &LPC_GPIO->SET[port];
obj->reg_clr = &LPC_GPIO->CLR[port];
obj->reg_in = &LPC_GPIO->PIN[port];
obj->reg_dir = &LPC_GPIO->DIR[port];
#elif defined(TARGET_LPC11Cxx)
int gpionum = ((int) pin) >> 5;
int pinnum = ((int) pin) & 0x1f;
LPC_GPIO_TypeDef* lpc = 0;
switch(gpionum) {
case 0: lpc = LPC_GPIO0; break;
case 1: lpc = LPC_GPIO1; break;
case 2: lpc = LPC_GPIO2; break;
case 3: lpc = LPC_GPIO3; break;
default: {
extern void abort(void); abort();
}
}
obj->reg_dir = &lpc->DIR;
obj->reg_set = &lpc->MASKED_ACCESS[1<<pinnum];
// TODO(bracz) this is not strictly speaking true. You have to write 0 here
// to clear the pin state.
obj->reg_clr = &lpc->MASKED_ACCESS[1<<pinnum];
obj->reg_in = &lpc->DATA;
#else
#error CPU undefined.
#endif
gpio_dir(obj, direction);
switch (direction) {
case PIN_OUTPUT: pin_mode(pin, PullNone); break;
case PIN_INPUT : pin_mode(pin, PullDown); break;
}
}
void
config_pins()
{
// REMOTE_EN pin
pin_mode(PIN_PTD3, PIN_MODE_MUX_GPIO);
gpio_dir(PIN_PTD3, GPIO_OUTPUT);
// UART
pin_mode(PIN_PTA1, PIN_MODE_MUX_ALT2);
pin_mode(PIN_PTA2, PIN_MODE_MUX_ALT2);
// for I2C devices
i2c_init(I2C_RATE_100);
PORTB.pcr[pin_physpin_from_pin(PIN_PTB0)].raw = ((struct PCR_t) {.mux=2,.ode=1}).raw;
void serial_init(serial_t *obj, PinName tx, PinName rx) {
// determine the UART to use -- for mcu's with multiple uart connections
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
UARTName uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
if ((int)uart == NC) {
error("Serial pinout mapping failed");
}
obj->uart = (NRF_UART_Type *)uart;
//pin configurations --
//outputs
NRF_GPIO->DIR |= (1<<tx);//TX_PIN_NUMBER);
NRF_GPIO->DIR |= (1<<RTS_PIN_NUMBER);
NRF_GPIO->DIR &= ~(1<<rx);//RX_PIN_NUMBER);
NRF_GPIO->DIR &= ~(1<<CTS_PIN_NUMBER);
obj->uart->PSELRTS = RTS_PIN_NUMBER;
obj->uart->PSELTXD = tx;//TX_PIN_NUMBER;
//inputs
obj->uart->PSELCTS = CTS_PIN_NUMBER;
obj->uart->PSELRXD = rx;//RX_PIN_NUMBER;
// set default baud rate and format
serial_baud (obj, 9600);
serial_format(obj, 8, ParityNone, 1);
obj->uart->ENABLE = (UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos);;
obj->uart->TASKS_STARTTX = 1;
obj->uart->TASKS_STARTRX = 1;
obj->uart->EVENTS_RXDRDY =0;
obj->index = 0;
// set rx/tx pins in PullUp mode
pin_mode(tx, PullUp);
pin_mode(rx, PullUp);
if (uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
/** Set the input pin mode
*
* @param obj The GPIO object
* @param mode The pin mode to be set
*/
void gpio_mode(gpio_t *obj, PinMode mode)
{
uint32_t pin = obj->gpioPin;
/* Set the mode for the pin */
pin_mode((PinName)pin, mode);
}
static void
init(void)
{
/* set modes before to enable the port */
gpio_dir(PROG_BUTTON, GPIO_INPUT);
pin_mode(PROG_BUTTON, PIN_MODE_PULLUP);
gpio_dir(TARGET_RESET, GPIO_INPUT);
gpio_dir(TARGET_LED, GPIO_INPUT);
/* set digital debounce/filter */
pin_physport_from_pin(PROG_BUTTON)->dfcr.cs = PORT_CS_LPO;
pin_physport_from_pin(PROG_BUTTON)->dfwr.filt = 31;
/* button interrupt */
pin_physport_from_pin(PROG_BUTTON)->dfer |= 1 << pin_physpin_from_pin(PROG_BUTTON);
pin_physport_from_pin(PROG_BUTTON)->pcr[pin_physpin_from_pin(PROG_BUTTON)].irqc = PCR_IRQC_INT_FALLING;
/* reset interrupt */
pin_physport_from_pin(TARGET_RESET)->pcr[pin_physpin_from_pin(TARGET_RESET)].irqc = PCR_IRQC_INT_RISING;
/* LED interrupt */
pin_physport_from_pin(TARGET_LED)->pcr[pin_physpin_from_pin(TARGET_LED)].irqc = PCR_IRQC_INT_FALLING;
int_enable(IRQ_PORTD);
gpio_dir(LED_SUCCESS, GPIO_OUTPUT);
gpio_dir(LED_FAIL, GPIO_OUTPUT);
timeout_init();
}
void analogout_init(dac_t *obj, PinName pin)
{
/* init in-memory structure */
obj->dac = (DAC_TypeDef *) pinmap_peripheral(pin, PinMap_DAC);
MBED_ASSERT((int) obj->dac != NC);
obj->channel = pin_location(pin, PinMap_DAC);
MBED_ASSERT((int) obj->channel != NC);
pin_mode(pin, Disabled);
if (!dac_initialized) {
/* Initialize the DAC. Will disable both DAC channels, so should only be done once */
/* Use default settings */
CMU_ClockEnable(cmuClock_DAC0, true);
DAC_Init_TypeDef init = DAC_INIT_DEFAULT;
/* Calculate the DAC clock prescaler value that will result in a DAC clock
* close to 500kHz. Second parameter is zero. This uses the current HFPERCLK
* frequency instead of setting a new one. */
init.prescale = DAC_PrescaleCalc(500000, REFERENCE_FREQUENCY);
/* Set reference voltage to VDD */
init.reference = dacRefVDD;
DAC_Init(obj->dac, &init);
dac_initialized = 1;
}
/* Use default channel settings */
DAC_InitChannel_TypeDef initChannel = DAC_INITCHANNEL_DEFAULT;
initChannel.enable = true;
DAC_InitChannel(obj->dac, &initChannel, obj->channel);
}
/*
* This code will increase the PWM duty cycle from 0% to 100%, then
* decrease it from 100% to 0%, and so on.
*/
int
main(void)
{
int inc = 1; /* Currently incrementing */
long fract v = 0.0; /* Current PWM duty cycle */
/* Initialize FTM and set PWM pin mode */
ftm_init();
pin_mode(PIN_PTC1, PIN_MODE_MUX_ALT4);
/* XXX: Switch to timeouts instead of busy-wait */
for (;;) {
/* Increment or decrement PWM duty slightly */
if (inc)
v += 0.00001lr;
else
v -= 0.00001lr;
/* Switch between increment and decrement */
if (v >= 1 || v <= 0) inc = !inc;
/* Set the actual PWM duty cycle */
ftm_set(FTM_CH0, v);
}
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT(obj->uart != (UARTName)NC);
// Enable USART clock
if (obj->uart == UART_1) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
obj->index = 0;
}
if (obj->uart == UART_2) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
obj->index = 1;
}
// Configure the UART pins
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
// Configure UART
obj->baudrate = 9600;
obj->databits = USART_WordLength_8b;
obj->stopbits = USART_StopBits_1;
obj->parity = USART_Parity_No;
obj->pin_tx = tx;
obj->pin_rx = rx;
init_usart(obj);
// For stdio management
if (obj->uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
UARTName uart = UART_0;
MBED_ASSERT((int)uart != NC);
obj->uart = (NRF_UART_Type *)uart;
//pin configurations --
//outputs
NRF_GPIO->DIR |= (1 << tx); //TX_PIN_NUMBER);
NRF_GPIO->DIR |= (1 << RTS_PIN_NUMBER);
NRF_GPIO->DIR &= ~(1 << rx); //RX_PIN_NUMBER);
NRF_GPIO->DIR &= ~(1 << CTS_PIN_NUMBER);
obj->uart->PSELRTS = RTS_PIN_NUMBER;
obj->uart->PSELTXD = tx; //TX_PIN_NUMBER;
//inputs
obj->uart->PSELCTS = CTS_PIN_NUMBER;
obj->uart->PSELRXD = rx; //RX_PIN_NUMBER;
// set default baud rate and format
serial_baud (obj, 9600);
serial_format(obj, 8, ParityNone, 1);
obj->uart->ENABLE = (UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos);
obj->uart->TASKS_STARTTX = 1;
obj->uart->TASKS_STARTRX = 1;
obj->uart->EVENTS_RXDRDY = 0;
obj->index = 0;
// set rx/tx pins in PullUp mode
if (tx != NC) {
pin_mode(tx, PullUp);
}
if (rx != NC) {
pin_mode(rx, PullUp);
}
if (uart == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
void initialize() {
// Disable timers 0, 1
LPC_CT16B0->TCR = TCR_OFF;
LPC_CT16B1->TCR = TCR_OFF;
//Power timers 0, 1
LPC_SYSCON->SYSAHBCLKCTRL |= 1 << (7 + 0);
LPC_SYSCON->SYSAHBCLKCTRL |= 1 << (7 + 1);
// Enable counter mode (non PWM) for timers 0, 1
LPC_CT16B0->PWMC = 0b0000;
LPC_CT16B1->PWMC = 0b0000;
// Reset functionality on MR0 controlling the counter time period
LPC_CT16B0->MCR = (1 << 1); // Timer0: reset counter 0 o0 MR0 match
LPC_CT16B1->MCR = (1 << 4); // Timer1: reset counter 1 on MR1 match
// Set prescalers to 1. Timer is incremented 'SystemCoreClock' times a second.
LPC_CT16B0->PR = 0;
LPC_CT16B1->PR = 0;
// TODO: is this reset needed?
LPC_CT16B0->TCR = TCR_RESET;
LPC_CT16B1->TCR = TCR_RESET;
// Clear output on match (tone are off, keep outputs low).
LPC_CT16B0->EMR = (0b01 << 4); // Timer0: output LOW on MR0 match
LPC_CT16B1->EMR = (0b10 << 6); // Timer1: output HIGH on MR1 match
// Set arbitrary cycle, just to have counter matches which sets
// the outputs to desired values based on EMR setting.
// Values don't matter much since we override latter when dialing
// the tones.
LPC_CT16B0->MR0 = COUNT(1000);
LPC_CT16B1->MR1 = COUNT(1300);
LPC_CT16B0->TCR = TCR_EN;
LPC_CT16B1->TCR = TCR_EN;
// Pinout
// TODO: define a const for the PWM pin function 2.
pin_function(P0_8, 2); // CT16B0_MAT0
pin_mode(P0_8, PullNone);
pin_function(P0_22, 2); // CT16B1_MAT1
pin_mode(P0_22, PullNone);
}
void port_mode(port_t *obj, PinMode mode) {
uint32_t i;
for (i = 0; i < 16; i++) { // Process all pins
if (obj->mask & (1 << i)) { // If the pin is used
pin_mode(port_pin(obj->port, i), mode);
}
}
}
