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cpu/cc2538: refine gpio_init_mux

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Introduces a define to inidicate an unused function parameter.
This commit is contained in:
smlng 2018-08-03 15:15:59 +02:00
parent feb3912c3d
commit d8e2611ed9
2 changed files with 7 additions and 3 deletions
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4
cpu/cc2538/include/periph_cpu.h
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@ -60,6 +60,10 @@ typedef uint32_t gpio_t;
*/
#define GPIO_UNDEF (0xffffffff)
/**
* @brief Custom value to indicate unused parameter in gpio_init_mux
*/
#define GPIO_MUX_NONE (0xff)
/**
* @brief Define a custom GPIO_PIN macro
*

6
cpu/cc2538/periph/gpio.c
View File

@ -264,13 +264,13 @@ void gpio_init_mux(gpio_t pin, uint8_t over, uint8_t sel, uint8_t func)
{
assert(pin != GPIO_UNDEF);
/* configure pin function and multiplexing */
if (over != MODE_NOTSUP) {
if (over != GPIO_MUX_NONE) {
IOC->OVER[_pp_num(pin)] = over;
}
if (sel != MODE_NOTSUP) {
if (sel != GPIO_MUX_NONE) {
IOC->SEL[_pp_num(pin)] = sel;
}
if (func != MODE_NOTSUP) {
if (func != GPIO_MUX_NONE) {
IOC->PINS[func] = _pp_num(pin);
}
/* enable alternative function mode */