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Allow NC pins to be instantiated on Silicon Labs platforms #10482

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Merged
0xc0170 merged 1 commit into from
May 22, 2019
Merged

Allow NC pins to be instantiated on Silicon Labs platforms #10482

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10 changes: 8 additions & 2 deletions targets/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@

void gpio_write(gpio_t *obj, int value)
{
MBED_ASSERT(obj->pin != NC);

if (value) {
GPIO_PinOutSet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
} else {
Expand All @@ -38,6 +40,8 @@ void gpio_write(gpio_t *obj, int value)

int gpio_read(gpio_t *obj)
{
MBED_ASSERT(obj->pin != NC);

if (obj->dir == PIN_INPUT) {
return GPIO_PinInGet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
} else {
Expand All @@ -63,15 +67,15 @@ uint32_t gpio_set(PinName pin)

void gpio_init(gpio_t *obj, PinName pin)
{
MBED_ASSERT(pin != NC);

CMU_ClockEnable(cmuClock_HFPER, true);
CMU_ClockEnable(cmuClock_GPIO, true);
obj->pin = pin;
}

void gpio_mode(gpio_t *obj, PinMode mode)
{
MBED_ASSERT(obj->pin != NC);

uint32_t pin = 1 << (obj->pin & 0xF);
uint32_t port = (obj->pin >> 4) & 0xF;

Expand Down Expand Up @@ -129,6 +133,8 @@ void gpio_mode(gpio_t *obj, PinMode mode)
// Used by DigitalInOut to set correct mode when direction is set
void gpio_dir(gpio_t *obj, PinDirection direction)
{
MBED_ASSERT(obj->pin != NC);

obj->dir = direction;
switch (direction) {
case PIN_INPUT:
Expand Down