Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

adding hwflwctl support for NUCLEO_L476RG #1658

Merged
merged 1 commit into from
Apr 17, 2016
Merged

adding hwflwctl support for NUCLEO_L476RG #1658

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/PeripheralPins.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,8 @@ extern const PinMap PinMap_PWM[];

extern const PinMap PinMap_UART_TX[];
extern const PinMap PinMap_UART_RX[];
extern const PinMap PinMap_UART_RTS[];
extern const PinMap PinMap_UART_CTS[];

//*** SPI ***

Expand Down
22 changes: 22 additions & 0 deletions libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/PeripheralPins.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -184,6 +184,28 @@ const PinMap PinMap_UART_RX[] = {
{NC, NC, 0}
};

const PinMap PinMap_UART_RTS[] = {
{PA_1, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
{PA_12, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
// {PA_15, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
// {PB_14, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // MEMs
// {PC_8, UART_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_UART5)},
// {PD_4, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
// {PD_12, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_UART3)}, // LED D4
{NC, NC, 0}
};

const PinMap PinMap_UART_CTS[] = {
{PA_0, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
{PA_11, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
// {PB_0, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
// {PB_13, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
// {PC_9, UART_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_UART5)},
// {PD_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
// {PD_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_UART3)}, // LED D4
{NC, NC, 0}
};

//*** SPI ***

const PinMap PinMap_SPI_MOSI[] = {
Expand Down
1 change: 1 addition & 0 deletions libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/device.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@
#define DEVICE_ANALOGOUT 1

#define DEVICE_SERIAL 1
#define DEVICE_SERIAL_FC 1

#define DEVICE_I2C 1
#define DEVICE_I2CSLAVE 1
Expand Down
5 changes: 5 additions & 0 deletions libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/objects.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,11 @@ struct serial_s {
uint32_t parity;
PinName pin_tx;
PinName pin_rx;
#if DEVICE_SERIAL_FC
uint32_t hw_flow_ctl;
PinName pin_rts;
PinName pin_cts;
#endif
};

struct spi_s {
Expand Down
66 changes: 66 additions & 0 deletions libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/serial_api.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,12 @@ UART_HandleTypeDef UartHandle;
int stdio_uart_inited = 0;
serial_t stdio_uart;

#if DEVICE_SERIAL_ASYNCH
#define SERIAL_OBJ(X) (obj->serial.X)
#else
#define SERIAL_OBJ(X) (obj->X)
#endif

static void init_uart(serial_t *obj)
{
UartHandle.Instance = (USART_TypeDef *)(obj->uart);
Expand All @@ -57,7 +63,11 @@ static void init_uart(serial_t *obj)
UartHandle.Init.WordLength = obj->databits;
UartHandle.Init.StopBits = obj->stopbits;
UartHandle.Init.Parity = obj->parity;
#if DEVICE_SERIAL_FC
UartHandle.Init.HwFlowCtl = SERIAL_OBJ(hw_flow_ctl);
#else
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
#endif
UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
UartHandle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_ENABLE;

Expand Down Expand Up @@ -231,6 +241,62 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
init_uart(obj);
}

#if DEVICE_SERIAL_FC
/** Set HW Control Flow
* @param obj The serial object
* @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
* @param rxflow Pin for the rxflow
* @param txflow Pin for the txflow
*/
void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
{

// Determine the UART to use (UART_1, UART_2, ...)
UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);

// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
SERIAL_OBJ(uart) = (UARTName)pinmap_merge(uart_cts, uart_rts);

MBED_ASSERT(SERIAL_OBJ(uart) != (UARTName)NC);
UartHandle.Instance = (USART_TypeDef *)(SERIAL_OBJ(uart));

if(type == FlowControlNone) {
// Disable hardware flow control
SERIAL_OBJ(hw_flow_ctl) = UART_HWCONTROL_NONE;
}
if (type == FlowControlRTS) {
// Enable RTS
MBED_ASSERT(uart_rts != (UARTName)NC);
SERIAL_OBJ(hw_flow_ctl) = UART_HWCONTROL_RTS;
SERIAL_OBJ(pin_rts) = rxflow;
// Enable the pin for RTS function
pinmap_pinout(rxflow, PinMap_UART_RTS);
}
if (type == FlowControlCTS) {
// Enable CTS
MBED_ASSERT(uart_cts != (UARTName)NC);
SERIAL_OBJ(hw_flow_ctl) = UART_HWCONTROL_CTS;
SERIAL_OBJ(pin_cts) = txflow;
// Enable the pin for CTS function
pinmap_pinout(txflow, PinMap_UART_CTS);
}
if (type == FlowControlRTSCTS) {
// Enable CTS & RTS
MBED_ASSERT(uart_rts != (UARTName)NC);
MBED_ASSERT(uart_cts != (UARTName)NC);
SERIAL_OBJ(hw_flow_ctl) = UART_HWCONTROL_RTS_CTS;
SERIAL_OBJ(pin_rts) = rxflow;
SERIAL_OBJ(pin_cts) = txflow;
// Enable the pin for CTS function
pinmap_pinout(txflow, PinMap_UART_CTS);
// Enable the pin for RTS function
pinmap_pinout(rxflow, PinMap_UART_RTS);
}
init_uart(obj);
}
#endif

/******************************************************************************
* INTERRUPTS HANDLING
******************************************************************************/
Expand Down