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rp2/machine_pin: Refactor the machine.Pin class for external GPIO.

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Handle externally controlled GPIO pins more generically, by removing all
CYW43-specific code from `machine_pin.c`, and adding hooks to initialise,
configure, read and write external pins.  This allows any driver for an
on-board module which controls GPIO pins (such as CYW43 or NINA), to
provide its own implementation of those hooks and work seamlessly with
`machine_pin.c`.
This commit is contained in:
iabdalkader 2022-10-25 18:43:38 +02:00 committed by Damien George
parent f4811b0b42
commit 66e0cfc3b9
5 changed files with 273 additions and 223 deletions
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4
ports/rp2/CMakeLists.txt
View File

@ -261,6 +261,10 @@ if (MICROPY_PY_NETWORK_CYW43)
${MICROPY_DIR}/extmod/network_cyw43.c
)
list(APPEND MICROPY_SOURCE_PORT
machine_pin_cyw43.c
)
target_link_libraries(${MICROPY_TARGET}
cyw43_driver_picow
cmsis_core

6
ports/rp2/boards/PICO_W/mpconfigboard.h
View File

@ -17,9 +17,11 @@
// Debug level (0-4) 1=warning, 2=info, 3=debug, 4=verbose
// #define MODUSSL_MBEDTLS_DEBUG_LEVEL 1
#define MICROPY_HW_PIN_CYW43_COUNT CYW43_WL_GPIO_COUNT
#define MICROPY_HW_PIN_EXT_PREFIX "WL_GPIO"
#define MICROPY_HW_PIN_EXT_COUNT CYW43_WL_GPIO_COUNT
#ifdef CYW43_WL_GPIO_LED_PIN
#define MICROPY_HW_PIN_CYW43_LED_PIN_NUM CYW43_WL_GPIO_LED_PIN
#define MICROPY_HW_PIN_EXT_LED_PIN_NUM CYW43_WL_GPIO_LED_PIN
#endif
#define MICROPY_HW_PIN_RESERVED(i) ((i) == CYW43_PIN_WL_HOST_WAKE || (i) == CYW43_PIN_WL_REG_ON)

338
ports/rp2/machine_pin.c
View File

@ -31,6 +31,7 @@
#include "py/mphal.h"
#include "shared/runtime/mpirq.h"
#include "modmachine.h"
#include "machine_pin.h"
#include "extmod/virtpin.h"
#include "hardware/irq.h"
@ -38,11 +39,6 @@
#include "hardware/structs/iobank0.h"
#include "hardware/structs/padsbank0.h"
#define GPIO_MODE_IN (0)
#define GPIO_MODE_OUT (1)
#define GPIO_MODE_OPEN_DRAIN (2)
#define GPIO_MODE_ALT (3)
// These can be or'd together.
#define GPIO_PULL_UP (1)
#define GPIO_PULL_DOWN (2)
@ -62,16 +58,6 @@
#define MICROPY_HW_PIN_RESERVED(i) (0)
#endif
typedef struct _machine_pin_obj_t {
mp_obj_base_t base;
uint8_t id;
#if MICROPY_HW_PIN_CYW43_COUNT
bool is_cyw43;
bool is_output;
bool last_output_value;
#endif
} machine_pin_obj_t;
typedef struct _machine_pin_irq_obj_t {
mp_irq_obj_t base;
uint32_t flags;
@ -113,23 +99,21 @@ STATIC const machine_pin_obj_t machine_pin_obj[NUM_BANK0_GPIOS] = {
{{&machine_pin_type}, 29},
};
#if MICROPY_HW_PIN_CYW43_COUNT
#include "lib/cyw43-driver/src/cyw43.h"
#define CYW43_PIN_NAME_PREFIX "WL_GPIO"
STATIC machine_pin_obj_t cyw43_pin_obj[MICROPY_HW_PIN_CYW43_COUNT];
#endif
#define LED_PIN_NAME "LED"
#ifndef MICROPY_HW_PIN_ENABLE_LED_PIN
#if defined(MICROPY_HW_PIN_CYW43_LED_PIN_NUM) || defined(PICO_DEFAULT_LED_PIN)
#if defined(MICROPY_HW_PIN_EXT_LED_PIN_NUM) || defined(PICO_DEFAULT_LED_PIN)
#define MICROPY_HW_PIN_ENABLE_LED_PIN 1
#endif
#endif
#if MICROPY_HW_PIN_EXT_COUNT
extern machine_pin_obj_t ext_pin_obj[MICROPY_HW_PIN_EXT_COUNT];
#endif
#ifdef MICROPY_HW_PIN_ENABLE_LED_PIN
#ifdef MICROPY_HW_PIN_CYW43_LED_PIN_NUM
STATIC machine_pin_obj_t *led_pin_obj = &cyw43_pin_obj[MICROPY_HW_PIN_CYW43_LED_PIN_NUM];
#ifdef MICROPY_HW_PIN_EXT_LED_PIN_NUM
STATIC machine_pin_obj_t *led_pin_obj = &ext_pin_obj[MICROPY_HW_PIN_EXT_LED_PIN_NUM];
#elif defined(MICROPY_HW_PIN_LED_PIN_NUM)
STATIC machine_pin_obj_t *led_pin_obj = &machine_pin_obj[MICROPY_HW_PIN_LED_PIN_NUM];
#elif defined(PICO_DEFAULT_LED_PIN)
@ -142,29 +126,12 @@ STATIC const machine_pin_obj_t *led_pin_obj = &machine_pin_obj[PICO_DEFAULT_LED_
// Mask with "1" indicating that the corresponding pin is in simulated open-drain mode.
uint32_t machine_pin_open_drain_mask;
#if MICROPY_HW_PIN_CYW43_COUNT
STATIC inline bool is_cyw43_pin(__unused const machine_pin_obj_t *self) {
return self->is_cyw43;
#if MICROPY_HW_PIN_EXT_COUNT
STATIC inline bool is_ext_pin(__unused const machine_pin_obj_t *self) {
return self->is_ext;
}
#else
#define is_cyw43_pin(x) false
#endif
#if MICROPY_HW_PIN_CYW43_COUNT
STATIC inline void update_cyw43_value(__unused machine_pin_obj_t *self, bool value) {
if (value != self->last_output_value || !self->is_output) {
cyw43_gpio_set(&cyw43_state, self->id, value);
}
self->last_output_value = value;
}
#endif
#if MICROPY_HW_PIN_CYW43_COUNT
STATIC inline bool get_cyw43_value(__unused machine_pin_obj_t *self) {
bool value = false;
cyw43_gpio_get(&cyw43_state, self->id, &value);
return value;
}
#define is_ext_pin(x) false
#endif
STATIC void gpio_irq(void) {
@ -191,12 +158,8 @@ void machine_pin_init(void) {
memset(MP_STATE_PORT(machine_pin_irq_obj), 0, sizeof(MP_STATE_PORT(machine_pin_irq_obj)));
irq_add_shared_handler(IO_IRQ_BANK0, gpio_irq, PICO_SHARED_IRQ_HANDLER_DEFAULT_ORDER_PRIORITY);
irq_set_enabled(IO_IRQ_BANK0, true);
#if MICROPY_HW_PIN_CYW43_COUNT
for (uint i = 0; i < count_of(cyw43_pin_obj); i++) {
cyw43_pin_obj[i].id = i;
cyw43_pin_obj[i].base.type = &machine_pin_type;
cyw43_pin_obj[i].is_cyw43 = true;
}
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_init();
#endif
}
@ -214,7 +177,7 @@ STATIC void machine_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_prin
machine_pin_obj_t *self = self_in;
uint funcsel = GPIO_GET_FUNCSEL(self->id);
qstr mode_qst;
if (!is_cyw43_pin(self)) {
if (!is_ext_pin(self)) {
if (funcsel == GPIO_FUNC_SIO) {
if (GPIO_IS_OPEN_DRAIN(self->id)) {
mode_qst = MP_QSTR_OPEN_DRAIN;
@ -243,9 +206,9 @@ STATIC void machine_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_prin
mp_printf(print, ", alt=%u", funcsel);
}
} else {
#if MICROPY_HW_PIN_CYW43_COUNT
#if MICROPY_HW_PIN_EXT_COUNT
mode_qst = self->is_output ? MP_QSTR_OUT : MP_QSTR_IN;
mp_printf(print, "Pin(%s%u, mode=%q", CYW43_PIN_NAME_PREFIX, self->id, mode_qst);
mp_printf(print, "Pin(%s%u, mode=%q", MICROPY_HW_PIN_EXT_PREFIX, self->id, mode_qst);
#endif
}
mp_printf(print, ")");
@ -261,97 +224,59 @@ static const mp_arg_t allowed_args[] = {
{MP_QSTR_alt, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = GPIO_FUNC_SIO}},
};
#if MICROPY_HW_PIN_CYW43_COUNT
// pin.init(mode, pull=None, *, value=None, alt=FUNC_SIO)
STATIC mp_obj_t machine_pin_cyw43_obj_init_helper(machine_pin_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_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);
if (args[ARG_pull].u_obj != mp_const_none) {
int pull = mp_obj_get_int(args[ARG_pull].u_obj);
if (pull) {
mp_raise_ValueError("Pulls are not supported for this pin");
}
}
if (args[ARG_alt].u_int != GPIO_FUNC_SIO) {
mp_raise_ValueError("Alternate functions are not supported for this pin");
}
int value = -1;
if (args[ARG_value].u_obj != mp_const_none) {
value = mp_obj_is_true(args[ARG_value].u_obj);
}
if (args[ARG_mode].u_obj != mp_const_none) {
mp_int_t mode = mp_obj_get_int(args[ARG_mode].u_obj);
if (mode == GPIO_MODE_IN) {
if (self->is_output) {
// todo need to disable output
}
self->is_output = false;
} else if (mode == GPIO_MODE_OUT) {
if (!self->is_output) {
// todo need to enable output
// for now we just set the value
if (value == -1) {
value = self->last_output_value;
}
self->last_output_value = !self->last_output_value; // defeat shortcircuit
update_cyw43_value(self, value);
self->is_output = true;
}
} else {
mp_raise_ValueError("only Pin.OUT and Pin.IN are supported for this pin");
}
}
if (value != -1) {
if (self->is_output) {
update_cyw43_value(self, value);
} else {
// figure if you pass a value to IN it should still remember it (this is what regular GPIO does)
self->last_output_value = value;
}
}
return mp_const_none;
}
#endif
STATIC mp_obj_t machine_pin_obj_init_helper(const machine_pin_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
// 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);
// set initial value (do this before configuring mode/pull)
if (is_ext_pin(self) && args[ARG_pull].u_obj != mp_const_none) {
mp_raise_ValueError("Pulls are not supported for external pins.");
}
if (is_ext_pin(self) && args[ARG_alt].u_int != GPIO_FUNC_SIO) {
mp_raise_ValueError("Alternate functions are not supported for external pins.");
}
int value = -1;
if (args[ARG_value].u_obj != mp_const_none) {
gpio_put(self->id, mp_obj_is_true(args[ARG_value].u_obj));
value = mp_obj_is_true(args[ARG_value].u_obj);
// set initial value (do this before configuring mode/pull)
if (!is_ext_pin(self)) {
gpio_put(self->id, value);
}
}
// configure mode
if (args[ARG_mode].u_obj != mp_const_none) {
mp_int_t mode = mp_obj_get_int(args[ARG_mode].u_obj);
if (mode == GPIO_MODE_IN) {
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
// The regular Pins are const, but the external pins are mutable.
machine_pin_obj_t *mutable_self = (machine_pin_obj_t *)self;
machine_pin_ext_config(mutable_self, mode, value);
#endif
} else if (mode == MACHINE_PIN_MODE_IN) {
mp_hal_pin_input(self->id);
} else if (mode == GPIO_MODE_OUT) {
} else if (mode == MACHINE_PIN_MODE_OUT) {
mp_hal_pin_output(self->id);
} else if (mode == GPIO_MODE_OPEN_DRAIN) {
} else if (mode == MACHINE_PIN_MODE_OPEN_DRAIN) {
mp_hal_pin_open_drain(self->id);
} else {
// Alternate function.
// Configure alternate function.
gpio_set_function(self->id, args[ARG_alt].u_int);
machine_pin_open_drain_mask &= ~(1 << self->id);
}
}
// configure pull (unconditionally because None means no-pull)
uint32_t pull = 0;
if (args[ARG_pull].u_obj != mp_const_none) {
pull = mp_obj_get_int(args[ARG_pull].u_obj);
if (!is_ext_pin(self)) {
// Configure pull (unconditionally because None means no-pull).
uint32_t pull = 0;
if (args[ARG_pull].u_obj != mp_const_none) {
pull = mp_obj_get_int(args[ARG_pull].u_obj);
}
gpio_set_pulls(self->id, pull & GPIO_PULL_UP, pull & GPIO_PULL_DOWN);
}
gpio_set_pulls(self->id, pull & GPIO_PULL_UP, pull & GPIO_PULL_DOWN);
return mp_const_none;
}
@ -359,7 +284,6 @@ STATIC mp_obj_t machine_pin_obj_init_helper(const machine_pin_obj_t *self, size_
mp_obj_t mp_pin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
const machine_pin_obj_t *self = NULL;
if (mp_obj_is_str(args[0])) {
const char *name = mp_obj_str_get_str(args[0]);
@ -368,12 +292,12 @@ mp_obj_t mp_pin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
self = led_pin_obj;
}
#endif
#if MICROPY_HW_PIN_CYW43_COUNT
static_assert(MICROPY_HW_PIN_CYW43_COUNT < 10, ""); // makes parsing name easy!
if (!self && !strncmp(name, CYW43_PIN_NAME_PREFIX, strlen(CYW43_PIN_NAME_PREFIX)) && strlen(name) == strlen(CYW43_PIN_NAME_PREFIX) + 1) {
int num = name[strlen(CYW43_PIN_NAME_PREFIX)] - '0';
if (num < MICROPY_HW_PIN_CYW43_COUNT) {
self = &cyw43_pin_obj[num];
#if MICROPY_HW_PIN_EXT_COUNT
static_assert(MICROPY_HW_PIN_EXT_COUNT < 10, ""); // makes parsing name easy!
if (!self && !strncmp(name, MICROPY_HW_PIN_EXT_PREFIX, strlen(MICROPY_HW_PIN_EXT_PREFIX)) && strlen(name) == strlen(MICROPY_HW_PIN_EXT_PREFIX) + 1) {
int num = name[strlen(MICROPY_HW_PIN_EXT_PREFIX)] - '0';
if (num < MICROPY_HW_PIN_EXT_COUNT) {
self = &ext_pin_obj[num];
}
}
#endif
@ -389,27 +313,14 @@ mp_obj_t mp_pin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
}
self = &machine_pin_obj[wanted_pin];
}
// note we have different init args based on the type of pin. so Pin("LED", Pin.OUT) may not always make sense
if (!is_cyw43_pin(self)) {
if (n_args > 1 || n_kw > 0) {
// pin mode given, so configure this GPIO
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
machine_pin_obj_init_helper(self, n_args - 1, args + 1, &kw_args);
}
return MP_OBJ_FROM_PTR(self);
}
#if MICROPY_HW_PIN_CYW43_COUNT
if (n_args > 1 || n_kw > 0) {
// pin mode given, so configure this GPIO
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
// The regular Pins are const, but the CYW43 pins are mutable.
machine_pin_obj_t *mutable_self = (machine_pin_obj_t *)self;
machine_pin_cyw43_obj_init_helper(mutable_self, n_args - 1, args + 1, &kw_args);
machine_pin_obj_init_helper(self, n_args - 1, args + 1, &kw_args);
}
return MP_OBJ_FROM_PTR(self);
#endif
}
// fast method for getting/setting pin value
@ -418,39 +329,33 @@ STATIC mp_obj_t machine_pin_call(mp_obj_t self_in, size_t n_args, size_t n_kw, c
machine_pin_obj_t *self = self_in;
if (n_args == 0) {
// get pin
if (!is_cyw43_pin(self)) {
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
return MP_OBJ_NEW_SMALL_INT(machine_pin_ext_get(self));
#endif
} else {
return MP_OBJ_NEW_SMALL_INT(gpio_get(self->id));
}
#if MICROPY_HW_PIN_CYW43_COUNT
return MP_OBJ_NEW_SMALL_INT(get_cyw43_value(self));
#endif
} else {
// set pin
bool value = mp_obj_is_true(args[0]);
if (!is_cyw43_pin(self)) {
if (GPIO_IS_OPEN_DRAIN(self->id)) {
MP_STATIC_ASSERT(GPIO_IN == 0 && GPIO_OUT == 1);
gpio_set_dir(self->id, 1 - value);
} else {
gpio_put(self->id, value);
}
return mp_const_none;
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_set(self, value);
#endif
} else if (GPIO_IS_OPEN_DRAIN(self->id)) {
MP_STATIC_ASSERT(GPIO_IN == 0 && GPIO_OUT == 1);
gpio_set_dir(self->id, 1 - value);
} else {
gpio_put(self->id, value);
}
#if MICROPY_HW_PIN_CYW43_COUNT
update_cyw43_value(self, value);
#endif
}
return mp_const_none;
}
// pin.init(mode, pull)
STATIC mp_obj_t machine_pin_obj_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
if (!is_cyw43_pin(args[0])) {
return machine_pin_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
}
#if MICROPY_HW_PIN_CYW43_COUNT
return machine_pin_cyw43_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
#endif
return machine_pin_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
}
MP_DEFINE_CONST_FUN_OBJ_KW(machine_pin_init_obj, 1, machine_pin_obj_init);
@ -463,36 +368,32 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pin_value_obj, 1, 2, machine_
// pin.low()
STATIC mp_obj_t machine_pin_low(mp_obj_t self_in) {
machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (!is_cyw43_pin(self)) {
if (GPIO_IS_OPEN_DRAIN(self->id)) {
gpio_set_dir(self->id, GPIO_OUT);
} else {
gpio_clr_mask(1u << self->id);
}
return mp_const_none;
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_set(self, 0);
#endif
} else if (GPIO_IS_OPEN_DRAIN(self->id)) {
gpio_set_dir(self->id, GPIO_OUT);
} else {
gpio_clr_mask(1u << self->id);
}
#if MICROPY_HW_PIN_CYW43_COUNT
update_cyw43_value(self, 0);
return mp_const_none;
#endif
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_low_obj, machine_pin_low);
// pin.high()
STATIC mp_obj_t machine_pin_high(mp_obj_t self_in) {
machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (!is_cyw43_pin(self)) {
if (GPIO_IS_OPEN_DRAIN(self->id)) {
gpio_set_dir(self->id, GPIO_IN);
} else {
gpio_set_mask(1u << self->id);
}
return mp_const_none;
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_set(self, 1);
#endif
} else if (GPIO_IS_OPEN_DRAIN(self->id)) {
gpio_set_dir(self->id, GPIO_IN);
} else {
gpio_set_mask(1u << self->id);
}
#if MICROPY_HW_PIN_CYW43_COUNT
update_cyw43_value(self, 1);
return mp_const_none;
#endif
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_high_obj, machine_pin_high);
@ -500,22 +401,20 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_high_obj, machine_pin_high);
// pin.toggle()
STATIC mp_obj_t machine_pin_toggle(mp_obj_t self_in) {
machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (!is_cyw43_pin(self)) {
if (GPIO_IS_OPEN_DRAIN(self->id)) {
if (GPIO_IS_OUT(self->id)) {
gpio_set_dir(self->id, GPIO_IN);
} else {
gpio_set_dir(self->id, GPIO_OUT);
}
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_set(self, self->last_output_value ^ 1);
#endif
} else if (GPIO_IS_OPEN_DRAIN(self->id)) {
if (GPIO_IS_OUT(self->id)) {
gpio_set_dir(self->id, GPIO_IN);
} else {
gpio_xor_mask(1u << self->id);
gpio_set_dir(self->id, GPIO_OUT);
}
return mp_const_none;
} else {
gpio_xor_mask(1u << self->id);
}
#if MICROPY_HW_PIN_CYW43_COUNT
update_cyw43_value(self, self->last_output_value ^ 1);
return mp_const_none;
#endif
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_toggle_obj, machine_pin_toggle);
@ -563,7 +462,7 @@ STATIC mp_obj_t machine_pin_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_
{ MP_QSTR_hard, MP_ARG_BOOL, {.u_bool = false} },
};
machine_pin_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
if (is_cyw43_pin(self)) {
if (is_ext_pin(self)) {
mp_raise_ValueError(MP_ERROR_TEXT("expecting a regular GPIO Pin"));
}
@ -595,10 +494,10 @@ STATIC const mp_rom_map_elem_t machine_pin_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_irq), MP_ROM_PTR(&machine_pin_irq_obj) },
// class constants
{ MP_ROM_QSTR(MP_QSTR_IN), MP_ROM_INT(GPIO_MODE_IN) },
{ MP_ROM_QSTR(MP_QSTR_OUT), MP_ROM_INT(GPIO_MODE_OUT) },
{ MP_ROM_QSTR(MP_QSTR_OPEN_DRAIN), MP_ROM_INT(GPIO_MODE_OPEN_DRAIN) },
{ MP_ROM_QSTR(MP_QSTR_ALT), MP_ROM_INT(GPIO_MODE_ALT) },
{ MP_ROM_QSTR(MP_QSTR_IN), MP_ROM_INT(MACHINE_PIN_MODE_IN) },
{ MP_ROM_QSTR(MP_QSTR_OUT), MP_ROM_INT(MACHINE_PIN_MODE_OUT) },
{ MP_ROM_QSTR(MP_QSTR_OPEN_DRAIN), MP_ROM_INT(MACHINE_PIN_MODE_OPEN_DRAIN) },
{ MP_ROM_QSTR(MP_QSTR_ALT), MP_ROM_INT(MACHINE_PIN_MODE_ALT) },
{ MP_ROM_QSTR(MP_QSTR_PULL_UP), MP_ROM_INT(GPIO_PULL_UP) },
{ MP_ROM_QSTR(MP_QSTR_PULL_DOWN), MP_ROM_INT(GPIO_PULL_DOWN) },
{ MP_ROM_QSTR(MP_QSTR_IRQ_RISING), MP_ROM_INT(GPIO_IRQ_EDGE_RISE) },
@ -610,31 +509,28 @@ STATIC mp_uint_t pin_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, i
(void)errcode;
machine_pin_obj_t *self = self_in;
if (!is_cyw43_pin(self)) {
switch (request) {
case MP_PIN_READ: {
return gpio_get(self->id);
}
case MP_PIN_WRITE: {
gpio_put(self->id, arg);
return 0;
}
}
return -1;
}
#if MICROPY_HW_PIN_CYW43_COUNT
switch (request) {
case MP_PIN_READ: {
return get_cyw43_value(self);
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
return machine_pin_ext_get(self);
#endif
} else {
return gpio_get(self->id);
}
}
case MP_PIN_WRITE: {
update_cyw43_value(self, arg);
if (is_ext_pin(self)) {
#if MICROPY_HW_PIN_EXT_COUNT
machine_pin_ext_set(self, arg);
#endif
} else {
gpio_put(self->id, arg);
}
return 0;
}
}
return -1;
#endif
}
STATIC const mp_pin_p_t pin_pin_p = {
@ -683,7 +579,7 @@ mp_hal_pin_obj_t mp_hal_get_pin_obj(mp_obj_t obj) {
mp_raise_ValueError(MP_ERROR_TEXT("expecting a Pin"));
}
machine_pin_obj_t *pin = MP_OBJ_TO_PTR(obj);
if (is_cyw43_pin(pin)) {
if (is_ext_pin(pin)) {
mp_raise_ValueError(MP_ERROR_TEXT("expecting a regular GPIO Pin"));
}
return pin->id;

55
ports/rp2/machine_pin.h Normal file
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@ -0,0 +1,55 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2022 Ibrahim Abdelkader <iabdalkader@openmv.io>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_RP2_MACHINE_PIN_H
#define MICROPY_INCLUDED_RP2_MACHINE_PIN_H
#include <stdint.h>
#include "py/obj.h"
#include "py/mphal.h"
enum {
MACHINE_PIN_MODE_IN = 0,
MACHINE_PIN_MODE_OUT = 1,
MACHINE_PIN_MODE_OPEN_DRAIN = 2,
MACHINE_PIN_MODE_ALT = 3
};
typedef struct _machine_pin_obj_t {
mp_obj_base_t base;
uint8_t id : 5;
#if MICROPY_HW_PIN_EXT_COUNT
uint8_t is_ext : 1;
uint8_t is_output : 1;
uint8_t last_output_value : 1;
#endif
} machine_pin_obj_t;
void machine_pin_ext_init(void);
void machine_pin_ext_set(machine_pin_obj_t *self, bool value);
bool machine_pin_ext_get(machine_pin_obj_t *self);
void machine_pin_ext_config(machine_pin_obj_t *self, int mode, int value);
#endif // MICROPY_INCLUDED_RP2_MACHINE_PIN_H

93
ports/rp2/machine_pin_cyw43.c Normal file
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@ -0,0 +1,93 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016-2022 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include "py/runtime.h"
#include "py/mphal.h"
#if defined(MICROPY_PY_NETWORK_CYW43) && defined(MICROPY_HW_PIN_EXT_COUNT)
#include "modmachine.h"
#include "machine_pin.h"
#include "lib/cyw43-driver/src/cyw43.h"
machine_pin_obj_t ext_pin_obj[MICROPY_HW_PIN_EXT_COUNT];
void machine_pin_ext_init(void) {
for (uint i = 0; i < count_of(ext_pin_obj); i++) {
ext_pin_obj[i].id = i;
ext_pin_obj[i].base.type = &machine_pin_type;
ext_pin_obj[i].is_ext = true;
}
}
void machine_pin_ext_set(machine_pin_obj_t *self, bool value) {
if (value != self->last_output_value || !self->is_output) {
cyw43_gpio_set(&cyw43_state, self->id, value);
}
self->last_output_value = value;
}
bool machine_pin_ext_get(machine_pin_obj_t *self) {
bool value = false;
cyw43_gpio_get(&cyw43_state, self->id, &value);
return value;
}
void machine_pin_ext_config(machine_pin_obj_t *self, int mode, int value) {
if (mode == MACHINE_PIN_MODE_IN) {
if (self->is_output) {
// TODO need to disable output
}
self->is_output = false;
} else if (mode == MACHINE_PIN_MODE_OUT) {
if (!self->is_output) {
// TODO need to enable output
// for now we just set the value
if (value == -1) {
value = self->last_output_value;
}
self->last_output_value = !self->last_output_value; // defeat shortcircuit
machine_pin_ext_set(self, value);
self->is_output = true;
}
} else {
mp_raise_ValueError("only Pin.OUT and Pin.IN are supported for this pin");
}
if (value != -1) {
if (self->is_output) {
machine_pin_ext_set(self, value);
} else {
// figure if you pass a value to IN it should still remember it (this is what regular GPIO does)
self->last_output_value = value;
}
}
}
#endif // defined(MICROPY_PY_NETWORK_CYW43) && defined(MICROPY_HW_PIN_EXT_COUNT)