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cpu/msp430/periph_gpio: resolve conflict with GPIO LL

In case both periph_gpio_irq and periph_gpio_ll_irq are used, the
periph_gpio_irq implementation now uses periph_gpio_ll_irq, so that
they can coexist.
This commit is contained in:
Marian Buschsieweke 2024-05-20 10:06:03 +02:00
parent 355f2335d5
commit fc907f9251
No known key found for this signature in database
GPG Key ID: 77AA882EC78084E6

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@ -20,11 +20,16 @@
*/
#include "bitarithm.h"
#include "compiler_hints.h"
#include "container.h"
#include "cpu.h"
#include "periph/gpio.h"
#include "periph/gpio_ll.h"
#ifdef MODULE_PERIPH_GPIO_IRQ
#include "modules.h"
#include "periph/gpio_ll_irq.h"
#endif
/**
* @brief Number of possible interrupt lines: 2 ports * 8 pins
*/
@ -40,11 +45,17 @@ static msp430_port_t *_port(gpio_t pin)
return (msp430_port_t *)gpio_port(pin >> 8);
}
static inline uint8_t _pin(gpio_t pin)
static inline uint8_t _pin_mask(gpio_t pin)
{
return (uint8_t)(pin & 0xff);
}
MAYBE_UNUSED
static uint8_t _pin_num(gpio_t pin)
{
return bitarithm_lsb(_pin_mask(pin));
}
static inline msp430_port_p1_p2_t *_isr_port(gpio_t pin)
{
/* checking for (pin >> 8) <= 2 requires 6 byte of .text more than
@ -68,10 +79,10 @@ int gpio_init(gpio_t pin, gpio_mode_t mode)
/* set pin direction */
if (mode == GPIO_OUT) {
port->DIR |= _pin(pin);
port->DIR |= _pin_mask(pin);
}
else {
port->DIR &= ~(_pin(pin));
port->DIR &= ~(_pin_mask(pin));
}
return 0;
@ -94,46 +105,46 @@ void gpio_periph_mode(gpio_t pin, bool enable)
}
}
if (enable) {
*sel |= _pin(pin);
*sel |= _pin_mask(pin);
}
else {
*sel &= ~(_pin(pin));
*sel &= ~(_pin_mask(pin));
}
}
int gpio_read(gpio_t pin)
{
msp430_port_t *port = _port(pin);
if (port->DIR & _pin(pin)) {
return (int)(port->OD & _pin(pin));
if (port->DIR & _pin_mask(pin)) {
return (int)(port->OD & _pin_mask(pin));
}
else {
return (int)(port->IN & _pin(pin));
return (int)(port->IN & _pin_mask(pin));
}
}
void gpio_set(gpio_t pin)
{
_port(pin)->OD |= _pin(pin);
_port(pin)->OD |= _pin_mask(pin);
}
void gpio_clear(gpio_t pin)
{
_port(pin)->OD &= ~(_pin(pin));
_port(pin)->OD &= ~(_pin_mask(pin));
}
void gpio_toggle(gpio_t pin)
{
_port(pin)->OD ^= _pin(pin);
_port(pin)->OD ^= _pin_mask(pin);
}
void gpio_write(gpio_t pin, int value)
{
if (value) {
_port(pin)->OD |= _pin(pin);
_port(pin)->OD |= _pin_mask(pin);
}
else {
_port(pin)->OD &= ~(_pin(pin));
_port(pin)->OD &= ~(_pin_mask(pin));
}
}
@ -145,7 +156,7 @@ static gpio_isr_ctx_t isr_ctx[ISR_NUMOF];
static int _ctx(gpio_t pin)
{
int i = bitarithm_lsb(_pin(pin));
int i = _pin_num(pin);
return (_port(pin) == &PORT_1.base) ? i : (i + 8);
}
@ -160,20 +171,28 @@ int gpio_init_int(gpio_t pin, gpio_mode_t mode, gpio_flank_t flank,
}
/* disable any activated interrupt */
port->IE &= ~(_pin(pin));
port->IE &= ~(_pin_mask(pin));
/* configure as input */
if (gpio_init(pin, mode) < 0) {
return -1;
}
/* save ISR context */
isr_ctx[_ctx(pin)].cb = cb;
isr_ctx[_ctx(pin)].arg = arg;
/* configure flank */
port->IES &= ~(_pin(pin));
port->IES |= (flank & _pin(pin));
/* clear pending interrupts and enable the IRQ */
port->IFG &= ~(_pin(pin));
gpio_irq_enable(pin);
if (IS_USED(MODULE_GPIO_LL_IRQ)) {
gpio_irq_trig_t trig = (flank == GPIO_RISING) ? GPIO_TRIGGER_EDGE_RISING
: GPIO_TRIGGER_EDGE_FALLING;
return gpio_ll_irq((gpio_port_t)&port->base, _pin_num(pin), trig, cb, arg);
}
else {
/* save ISR context */
isr_ctx[_ctx(pin)].cb = cb;
isr_ctx[_ctx(pin)].arg = arg;
/* configure flank */
port->IES &= ~(_pin_mask(pin));
port->IES |= (flank & _pin_mask(pin));
/* clear pending interrupts and enable the IRQ */
port->IFG &= ~(_pin_mask(pin));
gpio_irq_enable(pin);
}
return 0;
}
@ -181,7 +200,7 @@ void gpio_irq_enable(gpio_t pin)
{
msp430_port_p1_p2_t *port = _isr_port(pin);
if (port) {
port->IE |= _pin(pin);
port->IE |= _pin_mask(pin);
}
}
@ -189,10 +208,11 @@ void gpio_irq_disable(gpio_t pin)
{
msp430_port_p1_p2_t *port = _isr_port(pin);
if (port) {
port->IE &= ~(_pin(pin));
port->IE &= ~(_pin_mask(pin));
}
}
# ifndef MODULE_GPIO_LL_IRQ
static inline void isr_handler(msp430_port_p1_p2_t *port, int ctx)
{
for (unsigned i = 0; i < PINS_PER_PORT; i++) {
@ -216,4 +236,5 @@ ISR(PORT2_VECTOR, isr_port2)
isr_handler(&PORT_2, 8);
__exit_isr();
}
# endif
#endif /* MODULE_PERIPH_GPIO_IRQ */