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-rw-r--r--py/mkrules.mk4
-rw-r--r--stmhal/Makefile10
-rw-r--r--stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.h4
-rw-r--r--stmhal/boards/PYBOARD3/mpconfigboard.h4
-rw-r--r--stmhal/boards/PYBOARD4/mpconfigboard.h4
-rw-r--r--stmhal/boards/STM32F4DISC/mpconfigboard.h4
-rw-r--r--stmhal/exti.c346
-rw-r--r--stmhal/exti.h38
-rw-r--r--stmhal/gpio.c72
-rw-r--r--stmhal/gpio.h7
-rw-r--r--stmhal/main.c6
-rw-r--r--stmhal/pin_map.c227
-rw-r--r--stmhal/pin_named_pins.c67
-rw-r--r--stmhal/pybmodule.c22
-rw-r--r--stmhal/stm32f4xx_it.c95
-rw-r--r--stmhal/usrsw.c67
-rw-r--r--stmhal/usrsw.h4
17 files changed, 949 insertions, 32 deletions
diff --git a/py/mkrules.mk b/py/mkrules.mk
index 1ab3ee59ba..2730eff415 100644
--- a/py/mkrules.mk
+++ b/py/mkrules.mk
@@ -45,6 +45,10 @@ vpath %.c . $(TOP)
$(BUILD)/%.o: %.c
$(call compile_c)
+$(BUILD)/%.pp: %.c
+ $(ECHO) "PreProcess $<"
+ $(Q)$(CC) $(CFLAGS) -E -Wp,-C,-dD,-dI -o $@ $<
+
# The following rule uses | to create an order only prereuisite. Order only
# prerequisites only get built if they don't exist. They don't cause timestamp
# checkng to be performed.
diff --git a/stmhal/Makefile b/stmhal/Makefile
index 1c044055c1..aeddca4802 100644
--- a/stmhal/Makefile
+++ b/stmhal/Makefile
@@ -62,6 +62,8 @@ SRC_C = \
systick.c \
led.c \
pin.c \
+ pin_map.c \
+ pin_named_pins.c \
usart.c \
usb.c \
printf.c \
@@ -72,8 +74,10 @@ SRC_C = \
pybmodule.c \
import.c \
lexerfatfs.c \
+ gpio.c \
+ exti.c \
+ usrsw.c \
-# gpio.c \
# lcd.c \
# servo.c \
# flash.c \
@@ -86,10 +90,6 @@ SRC_C = \
# adc.c \
# rtc.c \
# file.c \
-# pin_named_pins.c \
-# pin_map.c \
-# exti.c \
-# usrsw.c \
# pybwlan.c \
SRC_S = \
diff --git a/stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.h b/stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.h
index b355486e2e..412dede131 100644
--- a/stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.h
+++ b/stmhal/boards/NETDUINO_PLUS_2/mpconfigboard.h
@@ -20,8 +20,8 @@
// 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_EDGE (EXTI_Trigger_Rising)
+#define USRSW_PULL (GPIO_NOPULL)
+#define USRSW_EXTI_MODE (GPIO_MODE_IT_RISING)
#define USRSW_PRESSED (1)
/* LED */
diff --git a/stmhal/boards/PYBOARD3/mpconfigboard.h b/stmhal/boards/PYBOARD3/mpconfigboard.h
index 6b15b20153..e0920f6859 100644
--- a/stmhal/boards/PYBOARD3/mpconfigboard.h
+++ b/stmhal/boards/PYBOARD3/mpconfigboard.h
@@ -16,8 +16,8 @@
// 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_EDGE (EXTI_Trigger_Falling)
+#define USRSW_PULL (GPIO_PULLUP)
+#define USRSW_EXTI_MODE (GPIO_MODE_IT_FALLING)
#define USRSW_PRESSED (0)
/* LED */
diff --git a/stmhal/boards/PYBOARD4/mpconfigboard.h b/stmhal/boards/PYBOARD4/mpconfigboard.h
index c255ba8ce9..c3d5e119c9 100644
--- a/stmhal/boards/PYBOARD4/mpconfigboard.h
+++ b/stmhal/boards/PYBOARD4/mpconfigboard.h
@@ -16,8 +16,8 @@
// 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_EDGE (EXTI_Trigger_Falling)
+#define USRSW_PULL (GPIO_PULLUP)
+#define USRSW_EXTI_MODE (GPIO_MODE_IT_FALLING)
#define USRSW_PRESSED (0)
/* LED */
diff --git a/stmhal/boards/STM32F4DISC/mpconfigboard.h b/stmhal/boards/STM32F4DISC/mpconfigboard.h
index 7c4efeb918..f713f9b756 100644
--- a/stmhal/boards/STM32F4DISC/mpconfigboard.h
+++ b/stmhal/boards/STM32F4DISC/mpconfigboard.h
@@ -16,8 +16,8 @@
// 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_EDGE (EXTI_Trigger_Rising)
+#define USRSW_PULL (GPIO_NOPULL)
+#define USRSW_EXTI_MODE (GPIO_MODE_IT_RISING)
#define USRSW_PRESSED (1)
/* LED */
diff --git a/stmhal/exti.c b/stmhal/exti.c
new file mode 100644
index 0000000000..ec6d82e4fd
--- /dev/null
+++ b/stmhal/exti.c
@@ -0,0 +1,346 @@
+#include <stdio.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <stm32f4xx_hal.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):
+// print("line =", line)
+//
+// # 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_FALLING, pyb.PULLUP, callback)
+//
+// Now every time a falling 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.
+//
+// exti = pyb.Exti(pin, mode, pull, callback)
+//
+// Valid modes are pyb.Exti.MODE_IRQ_RISING, pyb.Exti.MODE_IRQ_FALLING,
+// pyb.Exti.MODE_IRQ_RISING_FALLING, pyb.Exti.MODE_EVT_RISING,
+// pyb.Exti.MODE_EVT_FALLING, and pyb.Exti.MODE_EVT_RISING_FALLING.
+//
+// Only the MODE_IRQ_xxx modes have been tested. The MODE_EVENT_xxx modes have
+// something to do with sleep mode and he WFE instruction.
+//
+// Valid pull values are pyb.PULL_UP, pyb.PULL_DOWN, pyb.PULL_NONE.
+//
+// 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) (*(__IO uint32_t *)(PERIPH_BB_BASE + ((EXTI_OFFSET + (mode)) * 32) + ((line) * 4)))
+
+#define EXTI_Mode_Interrupt offsetof(EXTI_TypeDef, IMR)
+#define EXTI_Mode_Event offsetof(EXTI_TypeDef, EMR)
+
+#define EXTI_SWIER_BB(line) (*(__IO uint32_t *)(PERIPH_BB_BASE + ((EXTI_OFFSET + offsetof(EXTI_TypeDef, SWIER)) * 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;
+ void *param;
+ uint32_t mode;
+} exti_vector_t;
+
+static exti_vector_t exti_vector[EXTI_NUM_VECTORS];
+
+#if !defined(ETH)
+#define ETH_WKUP_IRQn 62 // The 405 doesn't have ETH, but we want a value to put in our table
+#endif
+
+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
+};
+
+// NOTE: param is for C callers. Python can use closure to get an object bound
+// with the function.
+uint exti_register(mp_obj_t pin_obj, mp_obj_t mode_obj, mp_obj_t pull_obj, mp_obj_t callback_obj, void *param) {
+ 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 (mode != GPIO_MODE_IT_RISING &&
+ mode != GPIO_MODE_IT_FALLING &&
+ mode != GPIO_MODE_IT_RISING_FALLING &&
+ mode != GPIO_MODE_EVT_RISING &&
+ mode != GPIO_MODE_EVT_FALLING &&
+ mode != GPIO_MODE_EVT_RISING_FALLING) {
+ nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Invalid EXTI Mode: %d", mode));
+ }
+ int pull = mp_obj_get_int(pull_obj);
+ if (pull != GPIO_NOPULL &&
+ pull != GPIO_PULLUP &&
+ pull != GPIO_PULLDOWN) {
+ nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Invalid EXTI Pull: %d", pull));
+ }
+
+ 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);
+
+ v->callback_obj = callback_obj;
+ v->param = param;
+ v->mode = (mode & 0x00010000) ? // GPIO_MODE_IT == 0x00010000
+ EXTI_Mode_Interrupt : EXTI_Mode_Event;
+
+ if (v->callback_obj != mp_const_none) {
+
+ GPIO_InitTypeDef exti;
+ exti.Pin = pin->pin_mask;
+ exti.Mode = mode;
+ exti.Pull = pull;
+ exti.Speed = GPIO_SPEED_FAST;
+ HAL_GPIO_Init(pin->gpio, &exti);
+
+ // Calling HAL_GPIO_Init does an implicit exti_enable
+
+ /* Enable and set NVIC Interrupt to the lowest priority */
+ HAL_NVIC_SetPriority(nvic_irq_channel[v_line], 0x0F, 0x0F);
+ HAL_NVIC_EnableIRQ(nvic_irq_channel[v_line]);
+ }
+ 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 = (1 << line);
+}
+
+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_RISING", GPIO_MODE_IT_RISING },
+ { "MODE_IRQ_FALLING", GPIO_MODE_IT_FALLING },
+ { "MODE_IRQ_RISING_FALLING", GPIO_MODE_IT_RISING_FALLING },
+ { "MODE_EVT_RISING", GPIO_MODE_EVT_RISING },
+ { "MODE_EVT_FALLING", GPIO_MODE_EVT_FALLING },
+ { "MODE_EVT_RISING_FALLING", GPIO_MODE_EVT_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)
+
+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, 4, 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];
+ self->line = exti_register(line_obj, mode_obj, trigger_obj, callback_obj, NULL);
+
+ 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,
+};
+
+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(void) {
+ for (exti_vector_t *v = exti_vector; v < &exti_vector[EXTI_NUM_VECTORS]; v++) {
+ v->callback_obj = mp_const_none;
+ v->param = NULL;
+ v->mode = EXTI_Mode_Interrupt;
+ }
+}
+
+void Handle_EXTI_Irq(uint32_t line) {
+ if (__HAL_GPIO_EXTI_GET_FLAG(1 << line)) {
+ __HAL_GPIO_EXTI_CLEAR_FLAG(1 << line);
+ if (line < EXTI_NUM_VECTORS) {
+ exti_vector_t *v = &exti_vector[line];
+ if (v->callback_obj != mp_const_none) {
+ rt_call_function_1(v->callback_obj, MP_OBJ_NEW_SMALL_INT(line));
+ }
+ }
+ }
+}
diff --git a/stmhal/exti.h b/stmhal/exti.h
new file mode 100644
index 0000000000..a6b50b26e8
--- /dev/null
+++ b/stmhal/exti.h
@@ -0,0 +1,38 @@
+// 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)
+
+#define EXTI_MODE_INTERRUPT (offsetof(EXTI_TypeDef, IMR))
+#define EXTI_MODE_EVENT (offsetof(EXTI_TypeDef, EMR))
+
+#define EXTI_TRIGGER_RISING (offsetof(EXTI_TypeDef, RTSR))
+#define EXTI_TRIGGER_FALLING (offsetof(EXTI_TypeDef, FTSR))
+#define EXTI_TRIGGER_RISING_FALLING (EXTI_TRIGGER_RISING + EXTI_TRIGGER_FALLING) // just different from RISING or FALLING
+
+void exti_init(void);
+
+uint exti_register(mp_obj_t pin_obj, mp_obj_t mode_obj, mp_obj_t trigger_obj, mp_obj_t callback_obj, void *param);
+
+void exti_enable(uint line);
+void exti_disable(uint line);
+void exti_swint(uint line);
+
+void Handle_EXTI_Irq(uint32_t line);
+
+typedef struct {
+ mp_obj_t callback;
+ void *param;
+} exti_t;
+
+extern const mp_obj_type_t exti_obj_type;
diff --git a/stmhal/gpio.c b/stmhal/gpio.c
new file mode 100644
index 0000000000..be1249b376
--- /dev/null
+++ b/stmhal/gpio.c
@@ -0,0 +1,72 @@
+// This is a woefully inadequate set of bindings for GPIO control, and
+// needs to be replaced with something much better.
+
+#include <stdio.h>
+#include <string.h>
+#include <stm32f4xx_hal.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "misc.h"
+#include "parse.h"
+#include "obj.h"
+#include "compile.h"
+#include "runtime0.h"
+#include "runtime.h"
+#include "systick.h"
+#include "gpio.h"
+#include "pin.h"
+
+mp_obj_t pyb_gpio(uint n_args, mp_obj_t *args) {
+ const pin_obj_t *pin = pin_map_user_obj(args[0]);
+ if (n_args == 1) {
+ // get pin
+ return MP_OBJ_NEW_SMALL_INT(HAL_GPIO_ReadPin(pin->gpio, pin->pin_mask));
+ }
+
+ // set pin
+ HAL_GPIO_WritePin(pin->gpio, pin->pin_mask, rt_is_true(args[1]));
+ return mp_const_none;
+}
+
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_gpio_obj, 1, 2, pyb_gpio);
+
+mp_obj_t pyb_gpio_input(uint n_args, mp_obj_t *args) {
+ const pin_obj_t *pin = pin_map_user_obj(args[0]);
+
+ uint32_t pull = GPIO_NOPULL;
+ if (n_args > 1) {
+ pull = mp_obj_get_int(args[1]);
+ }
+ GPIO_InitTypeDef GPIO_InitStructure;
+ GPIO_InitStructure.Pin = pin->pin_mask;
+ GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStructure.Pull = pull;
+ HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure);
+
+ return mp_const_none;
+}
+
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_gpio_input_obj, 1, 2, pyb_gpio_input);
+
+mp_obj_t pyb_gpio_output(uint n_args, mp_obj_t *args) {
+ const pin_obj_t *pin = pin_map_user_obj(args[0]);
+
+ uint32_t mode = GPIO_MODE_OUTPUT_PP;
+ if (n_args > 1) {
+ mode = mp_obj_get_int(args[1]) == GPIO_MODE_OUTPUT_OD ?
+ GPIO_MODE_OUTPUT_OD: GPIO_MODE_OUTPUT_PP;
+ }
+ GPIO_InitTypeDef GPIO_InitStructure;
+ GPIO_InitStructure.Pin = pin->pin_mask;
+ GPIO_InitStructure.Mode = mode;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure);
+
+ return mp_const_none;
+}
+
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_gpio_output_obj, 1, 2, pyb_gpio_output);
diff --git a/stmhal/gpio.h b/stmhal/gpio.h
new file mode 100644
index 0000000000..f43adfdac0
--- /dev/null
+++ b/stmhal/gpio.h
@@ -0,0 +1,7 @@
+mp_obj_t pyb_gpio(uint n_args, mp_obj_t *args);
+mp_obj_t pyb_gpio_output(uint n_args, mp_obj_t *args);
+mp_obj_t pyb_gpio_input(uint n_args, mp_obj_t *args);
+
+MP_DECLARE_CONST_FUN_OBJ(pyb_gpio_obj);
+MP_DECLARE_CONST_FUN_OBJ(pyb_gpio_input_obj);
+MP_DECLARE_CONST_FUN_OBJ(pyb_gpio_output_obj);
diff --git a/stmhal/main.c b/stmhal/main.c
index 3565b174b6..2c82cf030b 100644
--- a/stmhal/main.c
+++ b/stmhal/main.c
@@ -38,6 +38,8 @@
#include "pyexec.h"
#include "pybmodule.h"
#include "led.h"
+#include "exti.h"
+#include "usrsw.h"
#include "usb.h"
#if 0
#include "ff.h"
@@ -49,11 +51,9 @@
#include "accel.h"
#include "timer.h"
#include "pybwlan.h"
-#include "usrsw.h"
#include "rtc.h"
#include "file.h"
#include "pin.h"
-#include "exti.h"
#endif
void SystemClock_Config(void);
@@ -309,13 +309,13 @@ soft_reset:
def_path[2] = MP_OBJ_NEW_QSTR(MP_QSTR_0_colon__slash_lib);
sys_path = mp_obj_new_list(3, def_path);
-#if 0
exti_init();
#if MICROPY_HW_HAS_SWITCH
switch_init();
#endif
+#if 0
#if MICROPY_HW_HAS_LCD
// LCD init (just creates class, init hardware by calling LCD())
lcd_init();
diff --git a/stmhal/pin_map.c b/stmhal/pin_map.c
new file mode 100644
index 0000000000..c546231c80
--- /dev/null
+++ b/stmhal/pin_map.c
@@ -0,0 +1,227 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stm32f4xx_hal.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "runtime.h"
+#include "nlr.h"
+#include "map.h"
+
+#include "pin.h"
+
+// Usage Model:
+//
+// All Board Pins are predefined as pyb.Pin.board.Name
+//
+// x1_pin = pyb.Pin.board.X1
+//
+// g = pyb.gpio(pyb.Pin.board.X1, 0)
+//
+// CPU pins which correspond to the board pins are available
+// as pyb.cpu.Name. For the CPU pins, the names are the port letter
+// followed by the pin number. On the PYBOARD4, pyb.Pin.board.X1 and
+// pyb.Pin.cpu.B6 are the same pin.
+//
+// You can also use strings:
+//
+// g = pyb.gpio('X1', 0)
+//
+// Users can add their own names:
+//
+// pyb.Pin("LeftMotorDir", pyb.Pin.cpu.C12)
+// g = pyb.gpio("LeftMotorDir", 0)
+//
+// and can query mappings
+//
+// pin = pyb.Pin("LeftMotorDir");
+//
+// Users can also add their own mapping function:
+//
+// def MyMapper(pin_name):
+// if pin_name == "LeftMotorDir":
+// return pyb.Pin.cpu.A0
+//
+// pyb.Pin.mapper(MyMapper)
+//
+// So, if you were to call: pyb.gpio("LeftMotorDir", 0)
+// then "LeftMotorDir" is passed directly to the mapper function.
+//
+// To summarize, the following order determines how things get mapped into
+// an ordinal pin number:
+//
+// 1 - Directly specify a pin object
+// 2 - User supplied mapping function
+// 3 - User supplied mapping (object must be usable as a dictionary key)
+// 4 - Supply a string which matches a board pin
+// 5 - Supply a string which matches a CPU port/pin
+//
+// You can set pyb.Pin.debug(True) to get some debug information about
+// how a particular object gets mapped to a pin.
+
+static void pin_map_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, "<PinMap>");
+}
+
+static mp_obj_t pin_map_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
+ pin_map_obj_t *self = self_in;
+ rt_check_nargs(n_args, 1, 2, n_kw, false);
+
+ if (n_args > 1) {
+ if (!self->map_dict) {
+ self->map_dict = mp_obj_new_dict(1);
+ }
+ mp_obj_dict_store(self->map_dict, args[0], args[1]);
+ return mp_const_none;
+ }
+
+ // Run an argument through the mapper and return the result.
+ return (mp_obj_t)pin_map_user_obj(args[0]);
+}
+
+static mp_obj_t pin_map_obj_mapper(uint n_args, mp_obj_t *args) {
+ pin_map_obj_t *self = args[0];
+ if (n_args > 1) {
+ self->mapper = args[1];
+ return mp_const_none;
+ }
+ return self->mapper;
+}
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pin_map_obj_mapper_obj, 1, 2, pin_map_obj_mapper);
+
+static mp_obj_t pin_map_obj_debug(uint n_args, mp_obj_t *args) {
+ pin_map_obj_t *self = args[0];
+ if (n_args > 1) {
+ self->debug = rt_is_true(args[1]);
+ return mp_const_none;
+ }
+ return MP_BOOL(self->debug);
+}
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pin_map_obj_debug_obj, 1, 2, pin_map_obj_debug);
+
+static void pin_map_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, "mapper") == 0) {
+ dest[0] = (mp_obj_t)&pin_map_obj_mapper_obj;
+ dest[1] = self_in;
+ }
+ if (strcmp(attr, "debug") == 0) {
+ dest[0] = (mp_obj_t)&pin_map_obj_debug_obj;
+ dest[1] = self_in;
+ }
+ if (strcmp(attr, pin_board_pins_obj.name) == 0) {
+ dest[0] = (mp_obj_t)&pin_board_pins_obj;
+ dest[1] = MP_OBJ_NULL;
+ }
+ if (strcmp(attr, pin_cpu_pins_obj.name) == 0) {
+ dest[0] = (mp_obj_t)&pin_cpu_pins_obj;
+ dest[1] = MP_OBJ_NULL;
+ }
+}
+
+static const mp_obj_type_t pin_map_obj_type = {
+ { &mp_type_type },
+ .name = MP_QSTR_PinMap,
+ .print = pin_map_obj_print,
+ .call = pin_map_call,
+ .load_attr = pin_map_load_attr,
+};
+
+static const pin_map_obj_t pin_map_obj_init = {
+ { &pin_map_obj_type },
+ .mapper = MP_OBJ_NULL,
+ .map_dict = MP_OBJ_NULL,
+ .debug = false,
+};
+
+pin_map_obj_t pin_map_obj;
+
+void pin_map_init(void) {
+ pin_map_obj = pin_map_obj_init;
+}
+
+// C API used to convert a user-supplied pin name into an ordinal pin number.
+const pin_obj_t *pin_map_user_obj(mp_obj_t user_obj) {
+ const pin_obj_t *pin_obj;
+
+ // If a pin was provided, then use it
+ if (MP_OBJ_IS_TYPE(user_obj, &pin_obj_type)) {
+ pin_obj = user_obj;
+ if (pin_map_obj.debug) {
+ printf("Pin map passed pin ");
+ mp_obj_print((mp_obj_t)pin_obj, PRINT_STR);
+ printf("\n");
+ }
+ return pin_obj;
+ }
+
+ if (pin_map_obj.mapper) {
+ pin_obj = rt_call_function_1(pin_map_obj.mapper, user_obj);
+ if (pin_obj != mp_const_none) {
+ if (!MP_OBJ_IS_TYPE(pin_obj, &pin_obj_type)) {
+ nlr_jump(mp_obj_new_exception_msg(&mp_type_ValueError, "Pin.mapper didn't return a Pin object"));
+ }
+ if (pin_map_obj.debug) {
+ printf("Pin.mapper maps ");
+ mp_obj_print(user_obj, PRINT_REPR);
+ printf(" to ");
+ mp_obj_print((mp_obj_t)pin_obj, PRINT_STR);
+ printf("\n");
+ }
+ return pin_obj;
+ }
+ // The pin mapping function returned mp_const_none, fall through to
+ // other lookup methods.
+ }
+
+ if (pin_map_obj.map_dict) {
+ mp_map_t *pin_map_map = mp_obj_dict_get_map(pin_map_obj.map_dict);
+ mp_map_elem_t *elem = mp_map_lookup(pin_map_map, user_obj, MP_MAP_LOOKUP);
+ if (elem != NULL && elem->value != NULL) {
+ pin_obj = elem->value;
+ if (pin_map_obj.debug) {
+ printf("Pin.map_dict maps ");
+ mp_obj_print(user_obj, PRINT_REPR);
+ printf(" to ");
+ mp_obj_print((mp_obj_t)pin_obj, PRINT_STR);
+ printf("\n");
+ }
+ return pin_obj;
+ }
+ }
+
+ // See if the pin name matches a board pin
+ const char *pin_name = mp_obj_str_get_str(user_obj);
+ pin_obj = pin_find_named_pin(pin_board_pins, pin_name);
+ if (pin_obj) {
+ if (pin_map_obj.debug) {
+ printf("Pin.board maps ");
+ mp_obj_print(user_obj, PRINT_REPR);
+ printf(" to ");
+ mp_obj_print((mp_obj_t)pin_obj, PRINT_STR);
+ printf("\n");
+ }
+ return pin_obj;
+ }
+
+ // See if the pin name matches a cpu pin
+ pin_obj = pin_find_named_pin(pin_cpu_pins, pin_name);
+ if (pin_obj) {
+ if (pin_map_obj.debug) {
+ printf("Pin.cpu maps ");
+ mp_obj_print(user_obj, PRINT_REPR);
+ printf(" to ");
+ mp_obj_print((mp_obj_t)pin_obj, PRINT_STR);
+ printf("\n");
+ }
+ return pin_obj;
+ }
+
+ nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "pin '%s' not a valid pin identifier", pin_name));
+}
diff --git a/stmhal/pin_named_pins.c b/stmhal/pin_named_pins.c
new file mode 100644
index 0000000000..48906ad800
--- /dev/null
+++ b/stmhal/pin_named_pins.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stm32f4xx_hal.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "runtime.h"
+
+#include "pin.h"
+
+static void pin_named_pins_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
+ pin_named_pins_obj_t *self = self_in;
+ print(env, "<Pin.%s>", self->name);
+}
+
+static void pin_named_pins_obj_load_attr(mp_obj_t self_in, qstr attr_qstr, mp_obj_t *dest) {
+ pin_named_pins_obj_t *self = self_in;
+ const char *attr = qstr_str(attr_qstr);
+ const pin_obj_t *pin = pin_find_named_pin(self->named_pins, attr);
+ if (pin) {
+ dest[0] = (mp_obj_t)pin;
+ dest[1] = MP_OBJ_NULL;
+ }
+}
+
+static const mp_obj_type_t pin_named_pins_obj_type = {
+ { &mp_type_type },
+ .name = MP_QSTR_PinNamed,
+ .print = pin_named_pins_obj_print,
+ .load_attr = pin_named_pins_obj_load_attr,
+};
+
+const pin_named_pins_obj_t pin_board_pins_obj = {
+ { &pin_named_pins_obj_type },
+ .name = "board",
+ .named_pins = pin_board_pins,
+};
+
+const pin_named_pins_obj_t pin_cpu_pins_obj = {
+ { &pin_named_pins_obj_type },
+ .name = "cpu",
+ .named_pins = pin_cpu_pins,
+};
+
+const pin_obj_t *pin_find_named_pin(const pin_named_pin_t *named_pins, const char *name) {
+ const pin_named_pin_t *named_pin = named_pins;
+ while (named_pin->name) {
+ if (!strcmp(name, named_pin->name)) {
+ return named_pin->pin;
+ }
+ named_pin++;
+ }
+ return NULL;
+}
+
+const pin_af_obj_t *pin_find_af(const pin_obj_t *pin, uint8_t fn, uint8_t unit, uint8_t type) {
+ const pin_af_obj_t *af = pin->af;
+ for (int i = 0; i < pin->num_af; i++, af++) {
+ if (af->fn == fn && af->unit == unit && af->type == type) {
+ return af;
+ }
+ }
+ return NULL;
+}
diff --git a/stmhal/pybmodule.c b/stmhal/pybmodule.c
index 2abcb23700..0d2b914ded 100644
--- a/stmhal/pybmodule.c
+++ b/stmhal/pybmodule.c
@@ -16,21 +16,21 @@
#include "systick.h"
#include "pyexec.h"
#include "led.h"
+#include "gpio.h"
+#include "pin.h"
+#include "exti.h"
+#include "usrsw.h"
#if 0
#include "rtc.h"
#include "servo.h"
#include "storage.h"
#include "usb.h"
-#include "usrsw.h"
#include "sdcard.h"
#include "accel.h"
#include "i2c.h"
#include "usart.h"
#include "adc.h"
#include "audio.h"
-#include "pin.h"
-#include "gpio.h"
-#include "exti.h"
#endif
#include "pybmodule.h"
@@ -252,11 +252,13 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_servo), (mp_obj_t)&pyb_servo_set_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_Servo), (mp_obj_t)&pyb_Servo_obj },
#endif
+#endif
#if MICROPY_HW_HAS_SWITCH
{ MP_OBJ_NEW_QSTR(MP_QSTR_switch), (mp_obj_t)&pyb_switch_obj },
#endif
+#if 0
#if MICROPY_HW_HAS_SDCARD
{ MP_OBJ_NEW_QSTR(MP_QSTR_SD), (mp_obj_t)&pyb_sdcard_obj },
#endif
@@ -279,6 +281,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
#if MICROPY_HW_ENABLE_AUDIO
{ MP_OBJ_NEW_QSTR(MP_QSTR_Audio), (mp_obj_t)&pyb_Audio_obj },
#endif
+#endif
// pin mapper
{ MP_OBJ_NEW_QSTR(MP_QSTR_Pin), (mp_obj_t)&pin_map_obj },
@@ -287,15 +290,14 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_gpio), (mp_obj_t)&pyb_gpio_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_gpio_in), (mp_obj_t)&pyb_gpio_input_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_gpio_out), (mp_obj_t)&pyb_gpio_output_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_NONE), MP_OBJ_NEW_SMALL_INT(GPIO_PuPd_NOPULL) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_UP), MP_OBJ_NEW_SMALL_INT(GPIO_PuPd_UP) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_DOWN), MP_OBJ_NEW_SMALL_INT(GPIO_PuPd_DOWN) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_PUSH_PULL), MP_OBJ_NEW_SMALL_INT(GPIO_OType_PP) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_OPEN_DRAIN), MP_OBJ_NEW_SMALL_INT(GPIO_OType_OD) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_NONE), MP_OBJ_NEW_SMALL_INT(GPIO_NOPULL) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_UP), MP_OBJ_NEW_SMALL_INT(GPIO_PULLUP) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_PULL_DOWN), MP_OBJ_NEW_SMALL_INT(GPIO_PULLDOWN) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_PUSH_PULL), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_OUTPUT_PP) },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_OPEN_DRAIN), MP_OBJ_NEW_SMALL_INT(GPIO_MODE_OUTPUT_OD) },
// EXTI bindings
{ MP_OBJ_NEW_QSTR(MP_QSTR_Exti), (mp_obj_t)&exti_obj_type },
-#endif
};
STATIC const mp_map_t pyb_module_globals = {
diff --git a/stmhal/stm32f4xx_it.c b/stmhal/stm32f4xx_it.c
index b9651aa651..89764f07d6 100644
--- a/stmhal/stm32f4xx_it.c
+++ b/stmhal/stm32f4xx_it.c
@@ -43,6 +43,12 @@
#include "stm32f4xx_it.h"
#include "stm32f4xx_hal.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "exti.h"
+
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
@@ -256,13 +262,90 @@ void OTG_XX_WKUP_IRQHandler(void)
{
}*/
-
/**
- * @}
- */
-
-/**
- * @}
+ * @brief These functions handle the EXTI interrupt requests.
+ * @param None
+ * @retval None
*/
+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);
+
+#if 0
+ // for CC3000 support, needs to be re-written to use new EXTI code
+ if (EXTI_GetITStatus(EXTI_Line14) != RESET) {
+ led_toggle(PYB_LED_G2);
+ /* these are needed for CC3000 support
+ extern void SpiIntGPIOHandler(void);
+ extern uint32_t exti14_enabled;
+ extern uint32_t exti14_missed;
+ //printf("-> EXTI14 en=%lu miss=%lu\n", exti14_enabled, exti14_missed);
+ if (exti14_enabled) {
+ exti14_missed = 0;
+ SpiIntGPIOHandler(); // CC3000 interrupt
+ } else {
+ exti14_missed = 1;
+ }
+ */
+ EXTI_ClearITPendingBit(EXTI_Line14);
+ //printf("<- EXTI14 done\n");
+ }
+#endif
+}
+
+void PVD_IRQHandler(void) {
+ Handle_EXTI_Irq(EXTI_PVD_OUTPUT);
+}
+
+void RTC_Alarm_IRQHandler(void) {
+ Handle_EXTI_Irq(EXTI_RTC_ALARM);
+}
+
+
+#if defined(ETH) // The 407 has ETH, the 405 doesn't
+void ETH_WKUP_IRQHandler(void) {
+ Handle_EXTI_Irq(EXTI_ETH_WAKEUP);
+}
+#endif
+
+void TAMP_STAMP_IRQHandler(void) {
+ Handle_EXTI_Irq(EXTI_RTC_TIMESTAMP);
+}
+
+void RTC_WKUP_IRQHandler(void) {
+ Handle_EXTI_Irq(EXTI_RTC_WAKEUP);
+}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stmhal/usrsw.c b/stmhal/usrsw.c
new file mode 100644
index 0000000000..69a03b2cc3
--- /dev/null
+++ b/stmhal/usrsw.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stm32f4xx_hal.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "runtime.h"
+#include "usrsw.h"
+
+#include "exti.h"
+#include "gpio.h"
+#include "pin.h"
+#include "build/pins.h"
+
+// Usage Model:
+//
+// pyb.switch() returns True if the user switch is pressed, False otherwise.
+//
+// pyb.switch(callback) will register a callback to be called when the user
+// switch is pressed.
+//
+// pyb.switch(None) will remove the callback.
+//
+// Example:
+//
+// def switch_pressed():
+// print("User Switch pressed")
+//
+// pyb.switch(switch_pressed)
+
+static mp_obj_t switch_user_callback_obj;
+
+static mp_obj_t switch_callback(mp_obj_t line) {
+ if (switch_user_callback_obj != mp_const_none) {
+ rt_call_function_0(switch_user_callback_obj);
+ }
+ return mp_const_none;
+}
+static MP_DEFINE_CONST_FUN_OBJ_1(switch_callback_obj, switch_callback);
+
+void switch_init(void) {
+ switch_user_callback_obj = mp_const_none;
+ exti_register((mp_obj_t)&USRSW_PIN,
+ MP_OBJ_NEW_SMALL_INT(USRSW_EXTI_MODE),
+ MP_OBJ_NEW_SMALL_INT(USRSW_PULL),
+ (mp_obj_t)&switch_callback_obj,
+ NULL);
+}
+
+int switch_get(void) {
+ int val = ((USRSW_PIN.gpio->IDR & USRSW_PIN.pin_mask) != 0);
+ return val == USRSW_PRESSED;
+}
+
+/******************************************************************************/
+/* Micro Python bindings */
+
+static mp_obj_t pyb_switch(uint n_args, mp_obj_t *args) {
+ if (n_args == 0) {
+ return switch_get() ? mp_const_true : mp_const_false;
+ }
+ switch_user_callback_obj = args[0];
+ return mp_const_none;
+}
+
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_switch_obj, 0, 1, pyb_switch);
diff --git a/stmhal/usrsw.h b/stmhal/usrsw.h
new file mode 100644
index 0000000000..2da8f069ba
--- /dev/null
+++ b/stmhal/usrsw.h
@@ -0,0 +1,4 @@
+void switch_init(void);
+int switch_get(void);
+
+MP_DECLARE_CONST_FUN_OBJ(pyb_switch_obj);
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-06 15:19:47 +0000