Commit ee31f71d authored by Dave Hylands's avatar Dave Hylands
Browse files

Add EXTI support

Revamp usrsw to use new exti code.
Add user switch callback function.
parent 790eed6f
......@@ -67,13 +67,14 @@ SRC_C = \
audio.c \
sdcard.c \
i2c.c \
usrsw.c \
adc.c \
rtc.c \
file.c \
pin.c \
pin_named_pins.c \
pin_map.c \
exti.c \
usrsw.c \
# pybwlan.c \
SRC_S = \
......@@ -185,10 +186,21 @@ MAKE_PINS = boards/make-pins.py
BOARD_PINS = boards/$(BOARD)/pins.csv
AF_FILE = boards/stm32f4xx-af.csv
PREFIX_FILE = boards/stm32f4xx-prefix.c
$(BUILD)/pins_$(BOARD).c: $(MAKE_PINS) $(BOARD_PINS) $(AF_FILE) $(PREFIX_FILE)
GEN_PINS_SRC = $(BUILD)/pins_$(BOARD).c
GEN_PINS_HDR = $(BUILD)/pins.h
# Making OBJ use an order-only depenedency on the generated pins.h file
# has the side effect of making the pins.h file before we actually compile
# any of the objects. The normal dependency generation will deal with the
# case when pins.h is modified. But when it doesn't exist, we don't know
# which source files might need it.
$(OBJ): | $(BUILD)/pins.h
# Use a pattern rule here so that make will only call make-pins.py once to make
# both pins_$(BOARD).c and pins.h
$(BUILD)/%_$(BOARD).c $(BUILD)/%.h: boards/$(BOARD)/%.csv $(MAKE_PINS) $(AF_FILE) $(PREFIX_FILE)
$(ECHO) "Create $@"
$(Q)python $(MAKE_PINS) --board $(BOARD_PINS) --af $(AF_FILE) --prefix $(PREFIX_FILE) > $@
$(Q)python $(MAKE_PINS) --board $(BOARD_PINS) --af $(AF_FILE) --prefix $(PREFIX_FILE) --hdr $(GEN_PINS_HDR) > $(GEN_PINS_SRC)
$(BUILD)/pins_$(BOARD).o: $(BUILD)/pins_$(BOARD).c
$(call compile_c)
......
......@@ -18,14 +18,11 @@
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_AUDIO (0)
#define USRSW_PORT (GPIOB)
#define USRSW_PIN (GPIO_Pin_11)
// USRSW is pulled low. Pressing the button makes the input go high.
#define USRSW_PIN (pin_B11)
#define USRSW_PUPD (GPIO_PuPd_NOPULL)
#define USRSW_EXTI_PIN (EXTI_PinSource11)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOB)
#define USRSW_EXTI_LINE (EXTI_Line11)
#define USRSW_EXTI_IRQN (EXTI15_10_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Rising)
#define USRSW_PRESSED (1)
/* LED */
#define PYB_LED1_PORT (GPIOA) // Blue LED
......
......@@ -14,14 +14,11 @@
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_AUDIO (0)
#define USRSW_PORT (GPIOA)
#define USRSW_PIN (GPIO_Pin_13)
// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define USRSW_PIN (pin_A13)
#define USRSW_PUPD (GPIO_PuPd_UP)
#define USRSW_EXTI_PIN (EXTI_PinSource13)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA)
#define USRSW_EXTI_LINE (EXTI_Line13)
#define USRSW_EXTI_IRQN (EXTI15_10_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Rising)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Falling)
#define USRSW_PRESSED (0)
/* LED */
#define PYB_LED1_PORT (GPIOA)
......
......@@ -14,14 +14,11 @@
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_AUDIO (0)
#define USRSW_PORT (GPIOB)
#define USRSW_PIN (GPIO_Pin_3)
// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define USRSW_PIN (pin_B3)
#define USRSW_PUPD (GPIO_PuPd_UP)
#define USRSW_EXTI_PIN (EXTI_PinSource3)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOB)
#define USRSW_EXTI_LINE (EXTI_Line3)
#define USRSW_EXTI_IRQN (EXTI3_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Rising)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Falling)
#define USRSW_PRESSED (0)
/* LED */
#define PYB_LED1_PORT (GPIOA)
......
......@@ -14,14 +14,11 @@
#define MICROPY_HW_ENABLE_SERVO (0)
#define MICROPY_HW_ENABLE_AUDIO (0)
#define USRSW_PORT (GPIOA)
#define USRSW_PIN (GPIO_Pin_0)
// USRSW is pulled low. Pressing the button makes the input go high.
#define USRSW_PIN (pin_A0)
#define USRSW_PUPD (GPIO_PuPd_NOPULL)
#define USRSW_EXTI_PIN (EXTI_PinSource0)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA)
#define USRSW_EXTI_LINE (EXTI_Line0)
#define USRSW_EXTI_IRQN (EXTI0_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Falling)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Rising)
#define USRSW_PRESSED (1)
/* LED */
#define PYB_LED1_PORT (GPIOD)
......
......@@ -133,6 +133,13 @@ class Pin(object):
self.alt_fn_count, self.alt_fn_name()))
print('')
def print_header(self, hdr_file):
hdr_file.write('extern const pin_obj_t pin_{:s};\n'.
format(self.pin_name()))
if self.alt_fn_count > 0:
hdr_file.write('extern const pin_af_obj_t pin_{:s}_af[];\n'.
format(self.pin_name()))
class Pins(object):
......@@ -191,6 +198,12 @@ class Pins(object):
print('')
self.print_named('board', self.board_pins)
def print_header(self, hdr_filename):
with open(hdr_filename, 'wb') as hdr_file:
for pin in self.pins:
if pin.board_name:
pin.print_header(hdr_file)
def main():
parser = argparse.ArgumentParser(
......@@ -215,6 +228,12 @@ def main():
help="Specifies beginning portion of generated pins file",
default="stm32f4xx-prefix.c"
)
parser.add_argument(
"-r", "--hdr",
dest="hdr_filename",
help="Specifies name of generated pin header file",
default="build/pins.h"
)
args = parser.parse_args(sys.argv[1:])
pins = Pins()
......@@ -235,6 +254,7 @@ def main():
with open(args.prefix_filename, 'r') as prefix_file:
print(prefix_file.read())
pins.print()
pins.print_header(args.hdr_filename)
if __name__ == "__main__":
......
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <stm32f4xx.h>
#include <stm32f4xx_gpio.h>
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "runtime.h"
#include "nlr.h"
#include "pin.h"
#include "exti.h"
// Usage Model:
//
// There are a total of 22 interrupt lines. 16 of these can come from GPIO pins
// and the remaining 6 are from internal sources.
//
// For lines 0 thru 15, a given line can map to the corresponding line from an
// arbitrary port. So line 0 can map to Px0 where x is A, B, C, ... and
// line 1 can map to Px1 where x is A, B, C, ...
//
// def callback(line, param):
// print("line =", line, "param =", param)
//
// # Configure the pin as a GPIO input.
// pin = pyb.Pin.board.X1
// pyb.gpio_in(pin, pyb.PULL_UP)
// exti = pyb.Exti(pin, pyb.Exti.MODE_IRQ, pyb.Exti.TRIGGER_RISING, callback, 37)
//
// Now every time a rising edge is seen on the X1 pin, the callback will be
// called. Caution: mechanical pushbuttons have "bounce" and pushing or
// releasing a switch will often generate multiple edges.
// See: http://www.eng.utah.edu/~cs5780/debouncing.pdf for a detailed
// explanation, along with various techniques for debouncing.
//
// Trying to register 2 callbacks onto the same pin will throw an exception.
//
// If pin is passed as an integer, then it is assumed to map to one of the
// internal interrupt sources, and must be in the range 16 thru 22.
//
// All other pin objects go through the pin mapper to come up with one of the
// gpio pins.
//
// Valid modes are pyb.Exti.MODE_IRQ and pyb.Exti.MODE_EVENT (Only MODE_IRQ
// has been tested. MODE_EVENT has something to do with sleep mode and the
// WFE instruction).
//
// Valid edge triggers are pyb.Exti.TRIGGER_RISING, TRIGGER_FALLING, and TRIGGER_BOTH.
//
// exti.line() will return the line number that pin was mapped to.
// exti.disable() can be use to disable the interrupt associated with a given
// exti object. This could be useful for debouncing.
// exti.enable() enables a disabled interrupt
// exti.swint() will allow the callback to be triggered from software.
//
// pyb.Exti.regs() will dump the values of the EXTI registers.
//
// There is also a C API, so that drivers which require EXTI interrupt lines
// can also use this code. See exti.h for the available functions and
// usrsw.h for an example of using this.
#define EXTI_OFFSET (EXTI_BASE - PERIPH_BASE)
// Macro used to set/clear the bit corresponding to the line in the IMR/EMR
// register in an atomic fashion by using bitband addressing.
#define EXTI_MODE_BB(mode, line) (*(vu32 *)(PERIPH_BB_BASE + ((EXTI_OFFSET + (mode)) * 32) + ((line) * 4)))
// This macro will work with the EXTI_Trigger_Rising and EXTI_Trigger_Falling constants
// but not EXTI_Trigger_Rising_Falling.
#define EXTI_EDGE_BB(edge, line) (*(vu32 *)(PERIPH_BB_BASE + ((EXTI_OFFSET + (edge)) * 32) + ((line) * 4)))
#define EXTI_SWIER_BB(line) (*(vu32 *)(PERIPH_BB_BASE + ((EXTI_OFFSET + offsetof(EXTI_TypeDef, SWIER)) * 32) + ((line) * 4)))
#define EXTI_PR_BB(line) (*(vu32 *)(PERIPH_BB_BASE + ((EXTI_OFFSET + offsetof(EXTI_TypeDef, PR)) * 32) + ((line) * 4)))
typedef struct {
mp_obj_base_t base;
mp_small_int_t line;
} exti_obj_t;
typedef struct {
mp_obj_t callback_obj;
mp_obj_t param_obj;
EXTIMode_TypeDef mode;
} exti_vector_t;
static exti_vector_t exti_vector[EXTI_NUM_VECTORS];
static const uint8_t nvic_irq_channel[EXTI_NUM_VECTORS] = {
EXTI0_IRQn, EXTI1_IRQn, EXTI2_IRQn, EXTI3_IRQn, EXTI4_IRQn,
EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn, EXTI9_5_IRQn,
EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn, EXTI15_10_IRQn,
EXTI15_10_IRQn, PVD_IRQn, RTC_Alarm_IRQn, OTG_FS_WKUP_IRQn, ETH_WKUP_IRQn,
OTG_HS_WKUP_IRQn, TAMP_STAMP_IRQn, RTC_WKUP_IRQn
};
uint exti_register(mp_obj_t pin_obj, mp_obj_t mode_obj, mp_obj_t trigger_obj, mp_obj_t callback_obj, mp_obj_t param_obj) {
const pin_obj_t *pin = NULL;
uint v_line;
if (MP_OBJ_IS_INT(pin_obj)) {
// If an integer is passed in, then use it to identify lines 16 thru 22
// We expect lines 0 thru 15 to be passed in as a pin, so that we can
// get both the port number and line number.
v_line = mp_obj_get_int(pin_obj);
if (v_line < 16) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "EXTI vector %d < 16, use a Pin object", v_line));
}
if (v_line >= EXTI_NUM_VECTORS) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "EXTI vector %d >= max of %d", v_line, EXTI_NUM_VECTORS));
}
} else {
pin = pin_map_user_obj(pin_obj);
v_line = pin->pin;
}
int mode = mp_obj_get_int(mode_obj);
if (!IS_EXTI_MODE(mode)) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Invalid EXTI Mode: %d", mode));
}
int trigger = mp_obj_get_int(trigger_obj);
if (!IS_EXTI_TRIGGER(trigger)) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Invalid EXTI Trigger: %d", trigger));
}
exti_vector_t *v = &exti_vector[v_line];
if (v->callback_obj != mp_const_none && callback_obj != mp_const_none) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "EXTI vector %d is already in use", v_line));
}
// We need to update callback and param atomically, so we disable the line
// before we update anything.
exti_disable(v_line);
if (pin && callback_obj) {
// Enable SYSCFG clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
// For EXTI lines 0 thru 15, we need to configure which port controls
// the line.
SYSCFG_EXTILineConfig(pin->port, v_line);
}
v->callback_obj = callback_obj;
v->param_obj = param_obj;
v->mode = mode;
if (v->callback_obj != mp_const_none) {
// The EXTI_Init function isn't atomic. It uses |= and &=.
// We use bit band operations to make it atomic.
exti_disable(v_line);
EXTI_EDGE_BB(EXTI_Trigger_Rising, v_line) =
trigger == EXTI_Trigger_Rising || trigger == EXTI_Trigger_Rising_Falling;
EXTI_EDGE_BB(EXTI_Trigger_Falling, v_line) =
trigger == EXTI_Trigger_Falling || trigger == EXTI_Trigger_Rising_Falling;
exti_enable(v_line);
/* Enable and set NVIC Interrupt to the lowest priority */
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = nvic_irq_channel[v_line];
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
return v_line;
}
void exti_enable(uint line) {
if (line >= EXTI_NUM_VECTORS) {
return;
}
// Since manipulating IMR/EMR is a read-modify-write, and we want this to
// be atomic, we use the bit-band area to just affect the bit we're
// interested in.
EXTI_MODE_BB(exti_vector[line].mode, line) = 1;
}
void exti_disable(uint line) {
if (line >= EXTI_NUM_VECTORS) {
return;
}
// Since manipulating IMR/EMR is a read-modify-write, and we want this to
// be atomic, we use the bit-band area to just affect the bit we're
// interested in.
EXTI_MODE_BB(EXTI_Mode_Interrupt, line) = 0;
EXTI_MODE_BB(EXTI_Mode_Event, line) = 0;
}
void exti_swint(uint line) {
if (line >= EXTI_NUM_VECTORS) {
return;
}
EXTI_SWIER_BB(line) = 1;
}
static mp_obj_t exti_obj_line(mp_obj_t self_in) {
exti_obj_t *self = self_in;
return MP_OBJ_NEW_SMALL_INT(self->line);
}
static mp_obj_t exti_obj_enable(mp_obj_t self_in) {
exti_obj_t *self = self_in;
exti_enable(self->line);
return mp_const_none;
}
static mp_obj_t exti_obj_disable(mp_obj_t self_in) {
exti_obj_t *self = self_in;
exti_disable(self->line);
return mp_const_none;
}
static mp_obj_t exti_obj_swint(mp_obj_t self_in) {
exti_obj_t *self = self_in;
exti_swint(self->line);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_1(exti_obj_line_obj, exti_obj_line);
static MP_DEFINE_CONST_FUN_OBJ_1(exti_obj_enable_obj, exti_obj_enable);
static MP_DEFINE_CONST_FUN_OBJ_1(exti_obj_disable_obj, exti_obj_disable);
static MP_DEFINE_CONST_FUN_OBJ_1(exti_obj_swint_obj, exti_obj_swint);
static const mp_method_t exti_methods[] = {
{ "line", &exti_obj_line_obj },
{ "enable", &exti_obj_enable_obj },
{ "disable", &exti_obj_disable_obj },
{ "swint", &exti_obj_swint_obj },
{ NULL, NULL },
};
static mp_obj_t exti_regs(void) {
printf("EXTI_IMR %08lx\n", EXTI->IMR);
printf("EXTI_EMR %08lx\n", EXTI->EMR);
printf("EXTI_RTSR %08lx\n", EXTI->RTSR);
printf("EXTI_FTSR %08lx\n", EXTI->FTSR);
printf("EXTI_SWIER %08lx\n", EXTI->SWIER);
printf("EXTI_PR %08lx\n", EXTI->PR);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_0(exti_regs_obj, exti_regs);
typedef struct {
const char *name;
uint val;
} exti_const_t;
static const exti_const_t exti_const[] = {
{ "MODE_IRQ", EXTI_Mode_Interrupt },
{ "MODE_EVENT", EXTI_Mode_Event },
{ "TRIGGER_RISING", EXTI_Trigger_Rising },
{ "TRIGGER_FALLING", EXTI_Trigger_Falling },
{ "TRIGGER_BOTH", EXTI_Trigger_Rising_Falling },
};
#define EXTI_NUM_CONST (sizeof(exti_const) / sizeof(exti_const[0]))
static void exti_load_attr(mp_obj_t self_in, qstr attr_qstr, mp_obj_t *dest) {
(void)self_in;
const char *attr = qstr_str(attr_qstr);
if (strcmp(attr, "regs") == 0) {
dest[0] = (mp_obj_t)&exti_regs_obj;
return;
}
const exti_const_t *entry = &exti_const[0];
for (; entry < &exti_const[EXTI_NUM_CONST]; entry++) {
if (strcmp(attr, entry->name) == 0) {
dest[0] = MP_OBJ_NEW_SMALL_INT(entry->val);
dest[1] = MP_OBJ_NULL;
return;
}
}
}
// line_obj = pyb.Exti(pin, mode, trigger, callback, [param])
static mp_obj_t exti_call(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
// type_in == exti_obj_type
rt_check_nargs(n_args, 4, 5, n_kw, 0);
exti_obj_t *self = m_new_obj(exti_obj_t);
self->base.type = type_in;
mp_obj_t line_obj = args[0];
mp_obj_t mode_obj = args[1];
mp_obj_t trigger_obj = args[2];
mp_obj_t callback_obj = args[3];
mp_obj_t param_obj = mp_const_none;
if (n_args > 4) {
param_obj = args[4];
}
self->line = exti_register(line_obj, mode_obj, trigger_obj, callback_obj, param_obj);
return self;
}
static void exti_meta_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
(void) self_in;
print(env, "<Exti meta>");
}
static void exti_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
exti_obj_t *self = self_in;
print(env, "<Exti line=%u>", self->line);
}
static const mp_obj_type_t exti_meta_obj_type = {
{ &mp_type_type },
.name = MP_QSTR_ExtiMeta,
.print = exti_meta_obj_print,
.call = exti_call,
.load_attr = exti_load_attr,
};
static const mp_obj_type_t exti_obj_type = {
{ &exti_meta_obj_type },
.name = MP_QSTR_Exti,
.print = exti_obj_print,
.methods = exti_methods,
};
void exti_init_early(void) {
for (exti_vector_t *v = exti_vector; v < &exti_vector[EXTI_NUM_VECTORS]; v++) {
v->callback_obj = mp_const_none;
v->param_obj = mp_const_none;
v->mode = EXTI_Mode_Interrupt;
}
}
void exti_init(mp_obj_t mod) {
rt_store_attr(mod, MP_QSTR_Exti, (mp_obj_t)&exti_obj_type);
}
static void Handle_EXTI_Irq(uint32_t line) {
if (EXTI_PR_BB(line)) {
EXTI_PR_BB(line) = 1; // Clears bit
if (line < EXTI_NUM_VECTORS) {
exti_vector_t *v = &exti_vector[line];
if (v->callback_obj != mp_const_none) {
rt_call_function_2(v->callback_obj, MP_OBJ_NEW_SMALL_INT(line), v->param_obj);
}
}
}
}
void EXTI0_IRQHandler(void) {
Handle_EXTI_Irq(0);
}
void EXTI1_IRQHandler(void) {
Handle_EXTI_Irq(1);
}
void EXTI2_IRQHandler(void) {
Handle_EXTI_Irq(2);
}
void EXTI3_IRQHandler(void) {
Handle_EXTI_Irq(3);
}
void EXTI4_IRQHandler(void) {
Handle_EXTI_Irq(4);
}
void EXTI9_5_IRQHandler(void) {
Handle_EXTI_Irq(5);
Handle_EXTI_Irq(6);
Handle_EXTI_Irq(7);
Handle_EXTI_Irq(8);
Handle_EXTI_Irq(9);
}
void EXTI15_10_IRQHandler(void) {
Handle_EXTI_Irq(10);
Handle_EXTI_Irq(11);
Handle_EXTI_Irq(12);
Handle_EXTI_Irq(13);
Handle_EXTI_Irq(14);
Handle_EXTI_Irq(15);
}
void PVD_IRQHandler(void) {
Handle_EXTI_Irq(16);
}
void RTC_Alarm_IRQHandler(void) {
Handle_EXTI_Irq(17);
}
#if 0 // dealt with in stm32fxxx_it.c
void OTG_FS_WKUP_IRQHandler(void) {
Handle_EXTI_Irq(18);
}
#endif
void ETH_WKUP_IRQHandler(void) {
Handle_EXTI_Irq(19);
}
#if 0 // dealt with in stm32fxxx_it.c
void OTG_HS_WKUP_IRQHandler(void) {
Handle_EXTI_Irq(20);
}
#endif
void TAMP_STAMP_IRQHandler(void) {
Handle_EXTI_Irq(21);
}
void RTC_WKUP_IRQHandler(void) {
Handle_EXTI_Irq(22);
}
// Vectors 0-15 are for regular pins
// Vectors 16-22 are for internal sources.
//
// Use the following constants for the internal sources:
#define EXTI_PVD_OUTPUT (16)
#define EXTI_RTC_ALARM (17)
#define EXTI_USB_OTG_FS_WAKEUP (18)
#define EXTI_ETH_WAKEUP (19)
#define EXTI_USB_OTG_HS_WAKEUP (20)
#define EXTI_RTC_TIMESTAMP (21)
#define EXTI_RTC_WAKEUP (22)
#define EXTI_NUM_VECTORS 23
void exti_init_early(void);
void exti_init(mp_obj_t mod);
uint exti_register(mp_obj_t pin_obj, mp_obj_t mode_obj, mp_obj_t trigger_obj, mp_obj_t callback_obj, mp_obj_t param_obj);
void exti_enable(uint line);
void exti_disable(uint line);
void exti_swint(uint line);
typedef struct {
mp_obj_t callback;
mp_obj_t param;
} exti_t;
mp_obj_t pyb_gpio(uint n_args, mp_obj_t *args);
mp_obj_t pyb_gpio_input(mp_obj_t arg_pin, mp_obj_t arg_mode);
mp_obj_t pyb_gpio_output(mp_obj_t arg_pin, mp_obj_t arg_mode);
void gpio_init(mp_obj_t mod);
......@@ -51,6 +51,7 @@
#include "rtc.h"
#include "file.h"
#include "pin.h"
#include "exti.h"
int errno;
......@@ -346,9 +347,6 @@ int main(void) {
led_state(PYB_LED_G1, 1);
// more sub-system init
#if MICROPY_HW_HAS_SWITCH
switch_init();