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Diff: targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c
- Revision:
- 300:55638feb26a4
- Parent:
- 288:17565898c031
- Child:
- 339:40bd4701f3e2
--- a/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c Wed Aug 27 04:00:07 2014 +0100
+++ b/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c Wed Aug 27 08:45:06 2014 +0100
@@ -29,22 +29,22 @@
static uint32_t serial_irq_ids[UART_NUM] = {0};
static uart_irq_handler irq_handler;
-static uint32_t acceptedSpeeds[16][2] = {{1200,UART_BAUDRATE_BAUDRATE_Baud1200},
- {2400,UART_BAUDRATE_BAUDRATE_Baud2400},
- {4800,UART_BAUDRATE_BAUDRATE_Baud4800},
- {9600,UART_BAUDRATE_BAUDRATE_Baud9600},
- {14400,UART_BAUDRATE_BAUDRATE_Baud14400},
- {19200,UART_BAUDRATE_BAUDRATE_Baud19200},
- {28800,UART_BAUDRATE_BAUDRATE_Baud28800},
- {38400,UART_BAUDRATE_BAUDRATE_Baud38400},
- {57600,UART_BAUDRATE_BAUDRATE_Baud57600},
- {76800,UART_BAUDRATE_BAUDRATE_Baud76800},
- {115200,UART_BAUDRATE_BAUDRATE_Baud115200},
- {230400,UART_BAUDRATE_BAUDRATE_Baud230400},
- {250000,UART_BAUDRATE_BAUDRATE_Baud250000},
- {460800,UART_BAUDRATE_BAUDRATE_Baud460800},
- {921600,UART_BAUDRATE_BAUDRATE_Baud921600},
- {1000000,UART_BAUDRATE_BAUDRATE_Baud1M}};
+static uint32_t acceptedSpeeds[16][2] = {{1200, UART_BAUDRATE_BAUDRATE_Baud1200},
+ {2400, UART_BAUDRATE_BAUDRATE_Baud2400},
+ {4800, UART_BAUDRATE_BAUDRATE_Baud4800},
+ {9600, UART_BAUDRATE_BAUDRATE_Baud9600},
+ {14400, UART_BAUDRATE_BAUDRATE_Baud14400},
+ {19200, UART_BAUDRATE_BAUDRATE_Baud19200},
+ {28800, UART_BAUDRATE_BAUDRATE_Baud28800},
+ {38400, UART_BAUDRATE_BAUDRATE_Baud38400},
+ {57600, UART_BAUDRATE_BAUDRATE_Baud57600},
+ {76800, UART_BAUDRATE_BAUDRATE_Baud76800},
+ {115200, UART_BAUDRATE_BAUDRATE_Baud115200},
+ {230400, UART_BAUDRATE_BAUDRATE_Baud230400},
+ {250000, UART_BAUDRATE_BAUDRATE_Baud250000},
+ {460800, UART_BAUDRATE_BAUDRATE_Baud460800},
+ {921600, UART_BAUDRATE_BAUDRATE_Baud921600},
+ {1000000, UART_BAUDRATE_BAUDRATE_Baud1M}};
int stdio_uart_inited = 0;
serial_t stdio_uart;
@@ -52,78 +52,81 @@
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 << 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);
-
+ 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;
-
+ obj->uart->PSELTXD = tx; //TX_PIN_NUMBER;
+
//inputs
obj->uart->PSELCTS = CTS_PIN_NUMBER;
- obj->uart->PSELRXD = rx;//RX_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->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->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));
}
}
-void serial_free(serial_t *obj) {
+void serial_free(serial_t *obj)
+{
serial_irq_ids[obj->index] = 0;
}
// serial_baud
// set the baud rate, taking in to account the current SystemFrequency
-void serial_baud(serial_t *obj, int baudrate) {
- if(baudrate<=1200){
+void serial_baud(serial_t *obj, int baudrate)
+{
+ if (baudrate<=1200) {
obj->uart->BAUDRATE = UART_BAUDRATE_BAUDRATE_Baud1200;
return;
}
-
- for(int i=1;i<16;i++){
- if(baudrate<acceptedSpeeds[i][0]){
- obj->uart->BAUDRATE = acceptedSpeeds[i-1][1];
+
+ for (int i = 1; i<16; i++) {
+ if (baudrate<acceptedSpeeds[i][0]) {
+ obj->uart->BAUDRATE = acceptedSpeeds[i - 1][1];
return;
}
}
obj->uart->BAUDRATE = UART_BAUDRATE_BAUDRATE_Baud1M;
}
-void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
+void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
+{
// 0: 1 stop bits, 1: 2 stop bits
- // int parity_enable, parity_select;
+ // int parity_enable, parity_select;
switch (parity) {
case ParityNone:
- obj->uart->CONFIG = 0;
- break;
+ obj->uart->CONFIG = 0;
+ break;
default:
- obj->uart->CONFIG = (UART_CONFIG_PARITY_Included<<UART_CONFIG_PARITY_Pos);
+ obj->uart->CONFIG = (UART_CONFIG_PARITY_Included << UART_CONFIG_PARITY_Pos);
return;
}
//no Flow Control
@@ -132,74 +135,85 @@
//******************************************************************************
// * INTERRUPT HANDLING
//******************************************************************************
-static inline void uart_irq(uint32_t iir, uint32_t index) {
+static inline void uart_irq(uint32_t iir, uint32_t index)
+{
SerialIrq irq_type;
switch (iir) {
case 1:
irq_type = TxIrq;
- break;
+ break;
case 2:
irq_type = RxIrq;
- break;
-
- default: return;
+ break;
+
+ default:
+ return;
}
-
- if (serial_irq_ids[index] != 0){
+
+ if (serial_irq_ids[index] != 0) {
irq_handler(serial_irq_ids[index], irq_type);
}
}
+
#ifdef __cplusplus
extern "C" {
#endif
void UART0_IRQHandler()
{
- uint32_t irtype =0;
-
- if(NRF_UART0->EVENTS_TXDRDY){
- irtype =1;
- }
- else if(NRF_UART0->EVENTS_RXDRDY){
- irtype =2;
+ uint32_t irtype = 0;
+
+ if (NRF_UART0->EVENTS_TXDRDY) {
+ irtype = 1;
+ } else if (NRF_UART0->EVENTS_RXDRDY) {
+ irtype = 2;
}
uart_irq(irtype, 0);
}
+
#ifdef __cplusplus
}
#endif
-void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
- irq_handler = handler;
+void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
+{
+ irq_handler = handler;
serial_irq_ids[obj->index] = id;
}
-void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
+void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
+{
IRQn_Type irq_n = (IRQn_Type)0;
switch ((int)obj->uart) {
- case UART_0: irq_n=UART0_IRQn ;
+ case UART_0:
+ irq_n = UART0_IRQn;
break;
}
-
+
if (enable) {
switch (irq) {
- case RxIrq: obj->uart->INTENSET |= (UART_INTENSET_RXDRDY_Msk);break;
- case TxIrq: obj->uart->INTENSET |= (UART_INTENSET_TXDRDY_Msk);break;
+ case RxIrq:
+ obj->uart->INTENSET |= (UART_INTENSET_RXDRDY_Msk);
+ break;
+ case TxIrq:
+ obj->uart->INTENSET |= (UART_INTENSET_TXDRDY_Msk);
+ break;
}
NVIC_SetPriority(irq_n, 3);
NVIC_EnableIRQ(irq_n);
- }
- else { // disable
+ } else { // disable
int all_disabled = 0;
switch (irq) {
- case RxIrq: obj->uart->INTENSET &= ~(UART_INTENSET_RXDRDY_Msk);
- all_disabled = (obj->uart->INTENSET& (UART_INTENSET_TXDRDY_Msk))==0;
- break;
- case TxIrq: obj->uart->INTENSET &= ~(UART_INTENSET_TXDRDY_Msk);
- all_disabled = (obj->uart->INTENSET& (UART_INTENSET_RXDRDY_Msk))==0;
- break;
+ case RxIrq:
+ obj->uart->INTENSET &= ~(UART_INTENSET_RXDRDY_Msk);
+ all_disabled = (obj->uart->INTENSET & (UART_INTENSET_TXDRDY_Msk))==0;
+ break;
+ case TxIrq:
+ obj->uart->INTENSET &= ~(UART_INTENSET_TXDRDY_Msk);
+ all_disabled = (obj->uart->INTENSET & (UART_INTENSET_RXDRDY_Msk))==0;
+ break;
}
-
- if (all_disabled){
+
+ if (all_disabled) {
NVIC_DisableIRQ(irq_n);
}
}
@@ -208,35 +222,43 @@
//******************************************************************************
//* READ/WRITE
//******************************************************************************
-int serial_getc(serial_t *obj) {
- while (!serial_readable(obj));
-
+int serial_getc(serial_t *obj)
+{
+ while (!serial_readable(obj)) {
+ }
+
obj->uart->EVENTS_RXDRDY = 0;
-
+
return (uint8_t)obj->uart->RXD;
}
-void serial_putc(serial_t *obj, int c) {
+void serial_putc(serial_t *obj, int c)
+{
obj->uart->TXD = (uint8_t)c;
-
- while (!serial_writable(obj));
-
- obj->uart->EVENTS_TXDRDY =0;
+
+ while (!serial_writable(obj)) {
+ }
+
+ obj->uart->EVENTS_TXDRDY = 0;
}
-int serial_readable(serial_t *obj) {
+int serial_readable(serial_t *obj)
+{
return (obj->uart->EVENTS_RXDRDY == 1);
}
-int serial_writable(serial_t *obj) {
+int serial_writable(serial_t *obj)
+{
return (obj->uart->EVENTS_TXDRDY ==1);
}
-void serial_break_set(serial_t *obj) {
+void serial_break_set(serial_t *obj)
+{
obj->uart->TASKS_SUSPEND = 1;
}
-void serial_break_clear(serial_t *obj) {
+void serial_break_clear(serial_t *obj)
+{
obj->uart->TASKS_STARTTX = 1;
obj->uart->TASKS_STARTRX = 1;
}
