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esp8266: Expose simple pin API at C level.

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Damien George 2015-12-29 00:19:23 +00:00 committed by Paul Sokolovsky
parent cdad2b6f4d
commit 342d903a13
2 changed files with 22 additions and 6 deletions
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4
esp8266/modpyb.h
View File

@ -1,3 +1,7 @@
extern const mp_obj_type_t pyb_pin_type; extern const mp_obj_type_t pyb_pin_type;
extern const mp_obj_type_t pyb_adc_type; extern const mp_obj_type_t pyb_adc_type;
extern const mp_obj_type_t pyb_rtc_type; extern const mp_obj_type_t pyb_rtc_type;
uint mp_obj_get_pin(mp_obj_t pin_in);
int pin_get(uint pin);
void pin_set(uint pin, int value);

24
esp8266/modpybpin.c
View File

@ -69,10 +69,22 @@ STATIC const pyb_pin_obj_t pyb_pin_obj[] = {
STATIC uint8_t pin_mode[16]; STATIC uint8_t pin_mode[16];
STATIC void pin_set(uint pin, uint mode, int value) { uint mp_obj_get_pin(mp_obj_t pin_in) {
if (mp_obj_get_type(pin_in) != &pyb_pin_type) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "expecting a pin"));
}
pyb_pin_obj_t *self = pin_in;
return self->phys_port;
}
int pin_get(uint pin) {
return GPIO_INPUT_GET(pin);
}
void pin_set(uint pin, int value) {
uint32_t enable = 0; uint32_t enable = 0;
uint32_t disable = 0; uint32_t disable = 0;
switch (mode) { switch (pin_mode[pin]) {
case GPIO_MODE_INPUT: case GPIO_MODE_INPUT:
value = -1; value = -1;
disable = 1; disable = 1;
@ -162,7 +174,7 @@ STATIC mp_obj_t pyb_pin_obj_init_helper(pyb_pin_obj_t *self, mp_uint_t n_args, c
PIN_PULLUP_EN(self->periph); PIN_PULLUP_EN(self->periph);
} }
pin_set(self->phys_port, mode, value); pin_set(self->phys_port, value);
return mp_const_none; return mp_const_none;
} }
@ -203,7 +215,7 @@ STATIC mp_obj_t pyb_pin_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw,
return MP_OBJ_NEW_SMALL_INT(GPIO_INPUT_GET(self->phys_port)); return MP_OBJ_NEW_SMALL_INT(GPIO_INPUT_GET(self->phys_port));
} else { } else {
// set pin // set pin
pin_set(self->phys_port, pin_mode[self->phys_port], mp_obj_is_true(args[0])); pin_set(self->phys_port, mp_obj_is_true(args[0]));
return mp_const_none; return mp_const_none;
} }
} }
@ -223,7 +235,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_pin_value_obj, 1, 2, pyb_pin_valu
// pin.low() // pin.low()
STATIC mp_obj_t pyb_pin_low(mp_obj_t self_in) { STATIC mp_obj_t pyb_pin_low(mp_obj_t self_in) {
pyb_pin_obj_t *self = self_in; pyb_pin_obj_t *self = self_in;
pin_set(self->phys_port, pin_mode[self->phys_port], 0); pin_set(self->phys_port, 0);
return mp_const_none; return mp_const_none;
} }
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_low_obj, pyb_pin_low); STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_low_obj, pyb_pin_low);
@ -231,7 +243,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_low_obj, pyb_pin_low);
// pin.high() // pin.high()
STATIC mp_obj_t pyb_pin_high(mp_obj_t self_in) { STATIC mp_obj_t pyb_pin_high(mp_obj_t self_in) {
pyb_pin_obj_t *self = self_in; pyb_pin_obj_t *self = self_in;
pin_set(self->phys_port, pin_mode[self->phys_port], 1); pin_set(self->phys_port, 1);
return mp_const_none; return mp_const_none;
} }
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_high_obj, pyb_pin_high); STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_high_obj, pyb_pin_high);