MicroPython Forum (Archive)

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// Include the header file to get access to the MicroPython API
//#include "py/mphal.h"
#include "py/dynruntime.h"

// This is the function which will be called from Python, as delay_ms(x)
STATIC mp_obj_t delay_ms(mp_obj_t x_obj) {
    // Extract the integer from the MicroPython input object
    mp_int_t x = mp_obj_get_int(x_obj);
    mp_printf(&mp_plat_print,"delaying for " INT_FMT " ms...\n",x);
    //mp_hal_delay_ms(x);
	return mp_const_none;
}

// This is the function which will be called from Python, as delay_ms(x)
STATIC mp_obj_t delay_us(mp_obj_t x_obj) {
    // Extract the integer from the MicroPython input object
    mp_int_t x = mp_obj_get_int(x_obj);
    mp_printf(&mp_plat_print,"delaying for " INT_FMT " us...\n",x);
    //mp_hal_delay_us(x);
	return mp_const_none;
}

// Define a Python reference to the function above
STATIC MP_DEFINE_CONST_FUN_OBJ_1(delay_ms_obj, delay_ms);
STATIC MP_DEFINE_CONST_FUN_OBJ_1(delay_us_obj, delay_us);

// This is the entry point and is called when the module is imported
mp_obj_t mpy_init(mp_obj_fun_bc_t *self, size_t n_args, size_t n_kw, mp_obj_t *args) {
    // This must be first, it sets up the globals dict and other things
    MP_DYNRUNTIME_INIT_ENTRY

    // Make the function available in the module's namespace
    mp_store_global(MP_QSTR_delay_ms, MP_OBJ_FROM_PTR(&delay_ms_obj));
    mp_store_global(MP_QSTR_delay_us, MP_OBJ_FROM_PTR(&delay_us_obj));

    // This must be last, it restores the globals dict
    MP_DYNRUNTIME_INIT_EXIT
}

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# Location of top-level MicroPython directory
MPY_DIR = ../..

# Name of module
MOD = mydelay

# Source files (.c or .py)
SRC = mydelay.c

# Architecture to build for (x86, x64, armv7m, xtensa, xtensawin)
ARCH = armv7m

# Include to get the rules for compiling and linking the module
include $(MPY_DIR)/py/dynruntime.mk

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lj@mint:~/projects/micropython-1.12/examples/mydelay$ make
GEN build/mydelay.config.h
CC mydelay.c
LINK build/mydelay.o
arch:         EM_ARM
text size:    248
bss size:     0
GOT entries:  2
GEN mydelay.mpy
lj@mint:~/projects/micropython-1.12/examples/mydelay$

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MicroPython v1.12 on 2020-05-30; MCUDEV STM32F407VE with STM32F407VE
Type "help()" for more information.
>>> import mydelay
>>> mydelay.delay_ms(150)
delaying for 150 ms...
>>> mydelay.delay_us(200)
delaying for 200 us...
>>>

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lj@mint:~/projects/micropython-1.12/examples/mydelay$ make
GEN build/mydelay.config.h
CC mydelay.c
In file included from mydelay.c:2:0:
../../py/mphal.h:34:10: fatal error: mphalport.h: No such file or directory
 #include <mphalport.h>
          ^~~~~~~~~~~~~
compilation terminated.
../../py/dynruntime.mk:128: recipe for target 'build/mydelay.o' failed
make: *** [build/mydelay.o] Error 1
lj@mint:~/projects/micropython-1.12/examples/mydelay$