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Diffstat (limited to 'esp8266/modpybpin.c')
-rw-r--r--esp8266/modpybpin.c103
1 files changed, 78 insertions, 25 deletions
diff --git a/esp8266/modpybpin.c b/esp8266/modpybpin.c
index 3c3aebe6ea..8d1fe8b057 100644
--- a/esp8266/modpybpin.c
+++ b/esp8266/modpybpin.c
@@ -38,6 +38,7 @@
#define GPIO_MODE_INPUT (0)
#define GPIO_MODE_OUTPUT (1)
+#define GPIO_MODE_OPEN_DRAIN (2) // synthesised
#define GPIO_PULL_NONE (0)
#define GPIO_PULL_UP (1)
// Removed in SDK 1.1.0
@@ -66,6 +67,42 @@ STATIC const pyb_pin_obj_t pyb_pin_obj[] = {
{{&pyb_pin_type}, 15, 15, PERIPHS_IO_MUX_MTDO_U, FUNC_GPIO15},
};
+STATIC uint8_t pin_mode[16];
+
+STATIC void pin_set(uint pin, uint mode, int value) {
+ uint32_t enable = 0;
+ uint32_t disable = 0;
+ switch (mode) {
+ case GPIO_MODE_INPUT:
+ value = -1;
+ disable = 1;
+ break;
+
+ case GPIO_MODE_OUTPUT:
+ enable = 1;
+ break;
+
+ case GPIO_MODE_OPEN_DRAIN:
+ if (value == -1) {
+ return;
+ } else if (value == 0) {
+ enable = 1;
+ } else {
+ value = -1;
+ disable = 1;
+ }
+ break;
+ }
+
+ enable <<= pin;
+ disable <<= pin;
+ if (value == -1) {
+ gpio_output_set(0, 0, enable, disable);
+ } else {
+ gpio_output_set(value << pin, (1 - value) << pin, enable, disable);
+ }
+}
+
STATIC void pyb_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
pyb_pin_obj_t *self = self_in;
@@ -77,18 +114,33 @@ STATIC void pyb_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_ki
STATIC mp_obj_t pyb_pin_obj_init_helper(pyb_pin_obj_t *self, mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT },
- { MP_QSTR_pull, MP_ARG_INT, {.u_int = GPIO_PULL_NONE}},
+ { MP_QSTR_pull, MP_ARG_INT, {.u_int = GPIO_PULL_NONE}},
+ { MP_QSTR_value, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL}},
};
// parse args
- mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
- mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+ struct {
+ mp_arg_val_t mode, pull, value;
+ } args;
+ mp_arg_parse_all(n_args, pos_args, kw_args,
+ MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t*)&args);
// get io mode
- uint mode = args[0].u_int;
+ uint mode = args.mode.u_int;
// get pull mode
- uint pull = args[1].u_int;
+ uint pull = args.pull.u_int;
+
+ // get initial value
+ int value;
+ if (args.value.u_obj == MP_OBJ_NULL) {
+ value = -1;
+ } else {
+ value = mp_obj_is_true(args.value.u_obj);
+ }
+
+ // save the mode
+ pin_mode[self->phys_port] = mode;
// configure the GPIO as requested
PIN_FUNC_SELECT(self->periph, self->func);
@@ -110,10 +162,7 @@ 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);
}
- // TODO input mode is not working...
- if ((mode & GPIO_MODE_OUTPUT) == 0) {
- GPIO_DIS_OUTPUT(self->phys_port);
- }
+ pin_set(self->phys_port, mode, value);
return mp_const_none;
}
@@ -145,6 +194,20 @@ STATIC mp_obj_t pyb_pin_make_new(const mp_obj_type_t *type, mp_uint_t n_args, mp
return (mp_obj_t)pin;
}
+// fast method for getting/setting pin value
+STATIC mp_obj_t pyb_pin_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
+ mp_arg_check_num(n_args, n_kw, 0, 1, false);
+ pyb_pin_obj_t *self = self_in;
+ if (n_args == 0) {
+ // get pin
+ return MP_OBJ_NEW_SMALL_INT(GPIO_INPUT_GET(self->phys_port));
+ } else {
+ // set pin
+ pin_set(self->phys_port, pin_mode[self->phys_port], mp_obj_is_true(args[0]));
+ return mp_const_none;
+ }
+}
+
// pin.init(mode, pull)
STATIC mp_obj_t pyb_pin_obj_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
return pyb_pin_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
@@ -153,26 +216,14 @@ MP_DEFINE_CONST_FUN_OBJ_KW(pyb_pin_init_obj, 1, pyb_pin_obj_init);
// pin.value([value])
STATIC mp_obj_t pyb_pin_value(mp_uint_t n_args, const mp_obj_t *args) {
- pyb_pin_obj_t *self = args[0];
- if (n_args == 1) {
- // get pin
- return MP_OBJ_NEW_SMALL_INT(GPIO_INPUT_GET(self->phys_port));
- } else {
- // set pin
- if (mp_obj_is_true(args[1])) {
- GPIO_OUTPUT_SET(self->phys_port, 1);
- } else {
- GPIO_OUTPUT_SET(self->phys_port, 0);
- }
- return mp_const_none;
- }
+ return pyb_pin_call(args[0], n_args - 1, 0, args + 1);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_pin_value_obj, 1, 2, pyb_pin_value);
// pin.low()
STATIC mp_obj_t pyb_pin_low(mp_obj_t self_in) {
pyb_pin_obj_t *self = self_in;
- GPIO_OUTPUT_SET(self->phys_port, 0);
+ pin_set(self->phys_port, pin_mode[self->phys_port], 0);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_low_obj, pyb_pin_low);
@@ -180,7 +231,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_low_obj, pyb_pin_low);
// pin.high()
STATIC mp_obj_t pyb_pin_high(mp_obj_t self_in) {
pyb_pin_obj_t *self = self_in;
- GPIO_OUTPUT_SET(self->phys_port, 1);
+ pin_set(self->phys_port, pin_mode[self->phys_port], 1);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_pin_high_obj, pyb_pin_high);
@@ -194,7 +245,8 @@ STATIC const mp_map_elem_t pyb_pin_locals_dict_table[] = {
// class constants
{ MP_OBJ_NEW_QSTR(MP_QSTR_IN), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_INPUT) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_OUT_PP), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_OUTPUT) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_OUT), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_OUTPUT) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_OPEN_DRAIN), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_OPEN_DRAIN) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_PULL_NONE), MP_OBJ_NEW_SMALL_INT(GPIO_PULL_NONE) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_PULL_UP), MP_OBJ_NEW_SMALL_INT(GPIO_PULL_UP) },
//{ MP_OBJ_NEW_QSTR(MP_QSTR_PULL_DOWN), MP_OBJ_NEW_SMALL_INT(GPIO_PULL_DOWN) },
@@ -207,5 +259,6 @@ const mp_obj_type_t pyb_pin_type = {
.name = MP_QSTR_Pin,
.print = pyb_pin_print,
.make_new = pyb_pin_make_new,
+ .call = pyb_pin_call,
.locals_dict = (mp_obj_t)&pyb_pin_locals_dict,
};
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-02 14:09:18 +0000