kopia lustrzana https://github.com/pimoroni/pimoroni-pico
125 wiersze
4.6 KiB
C++
125 wiersze
4.6 KiB
C++
#include "drivers/bme280/bme280.hpp"
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#define MP_OBJ_TO_PTR2(o, t) ((t *)(uintptr_t)(o))
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// SDA/SCL on even/odd pins, I2C0/I2C1 on even/odd pairs of pins.
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#define IS_VALID_SCL(i2c, pin) (((pin) & 1) == 1 && (((pin) & 2) >> 1) == (i2c))
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#define IS_VALID_SDA(i2c, pin) (((pin) & 1) == 0 && (((pin) & 2) >> 1) == (i2c))
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using namespace pimoroni;
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extern "C" {
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#include "breakout_bme280.h"
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#include "pimoroni_i2c.h"
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/***** I2C Struct *****/
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typedef struct _PimoroniI2C_obj_t {
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mp_obj_base_t base;
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I2C *i2c;
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} _PimoroniI2C_obj_t;
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/***** Variables Struct *****/
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typedef struct _breakout_bme280_BreakoutBME280_obj_t {
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mp_obj_base_t base;
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BME280 *breakout;
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} breakout_bme280_BreakoutBME280_obj_t;
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/***** Print *****/
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void BreakoutBME280_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)kind; //Unused input parameter
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breakout_bme280_BreakoutBME280_obj_t *self = MP_OBJ_TO_PTR2(self_in, breakout_bme280_BreakoutBME280_obj_t);
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BME280* breakout = self->breakout;
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mp_print_str(print, "BreakoutBME280(");
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mp_print_str(print, "i2c = ");
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mp_obj_print_helper(print, mp_obj_new_int((breakout->get_i2c()->get_i2c() == i2c0) ? 0 : 1), PRINT_REPR);
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mp_print_str(print, ", sda = ");
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mp_obj_print_helper(print, mp_obj_new_int(breakout->get_i2c()->get_sda()), PRINT_REPR);
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mp_print_str(print, ", scl = ");
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mp_obj_print_helper(print, mp_obj_new_int(breakout->get_i2c()->get_scl()), PRINT_REPR);
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mp_print_str(print, ", int = ");
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mp_obj_print_helper(print, mp_obj_new_int(breakout->get_int()), PRINT_REPR);
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mp_print_str(print, ")");
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}
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/***** Constructor *****/
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mp_obj_t BreakoutBME280_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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breakout_bme280_BreakoutBME280_obj_t *self = nullptr;
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enum { ARG_i2c, ARG_address, ARG_int };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_i2c, MP_ARG_OBJ, {.u_obj = nullptr} },
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{ MP_QSTR_address, MP_ARG_INT, {.u_int = BME280::DEFAULT_I2C_ADDRESS} },
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{ MP_QSTR_interrupt, MP_ARG_INT, {.u_int = PIN_UNUSED} },
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};
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// Parse args.
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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if(!MP_OBJ_IS_TYPE(args[ARG_i2c].u_obj, &PimoroniI2C_type)) {
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mp_raise_ValueError(MP_ERROR_TEXT("BreakoutBME280: Bad i2C object"));
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return mp_const_none;
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}
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_PimoroniI2C_obj_t *i2c = (_PimoroniI2C_obj_t *)MP_OBJ_TO_PTR(args[ARG_i2c].u_obj);
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self = m_new_obj(breakout_bme280_BreakoutBME280_obj_t);
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self->base.type = &breakout_bme280_BreakoutBME280_type;
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self->breakout = new BME280(i2c->i2c, args[ARG_address].u_int, args[ARG_int].u_int);
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if(!self->breakout->init()) {
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mp_raise_msg(&mp_type_RuntimeError, "BreakoutBME280: breakout not found when initialising");
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}
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return MP_OBJ_FROM_PTR(self);
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}
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mp_obj_t BreakoutBME280_read(mp_obj_t self_in) {
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breakout_bme280_BreakoutBME280_obj_t *self = MP_OBJ_TO_PTR2(self_in, breakout_bme280_BreakoutBME280_obj_t);
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BME280::bme280_reading result = self->breakout->read_forced();
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mp_obj_t tuple[3];
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tuple[0] = mp_obj_new_float(result.temperature);
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tuple[1] = mp_obj_new_float(result.pressure);
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tuple[2] = mp_obj_new_float(result.humidity);
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return mp_obj_new_tuple(3, tuple);
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}
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mp_obj_t BreakoutBME280_configure(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_self, ARG_filter, ARG_standby_time, ARG_os_pressure, ARG_os_temp, ARG_os_humidity, ARG_mode };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_filter, MP_ARG_INT, { .u_int=BME280_FILTER_COEFF_2 } },
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{ MP_QSTR_standby_time, MP_ARG_INT, { .u_int=BME280_STANDBY_TIME_0_5_MS } },
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{ MP_QSTR_os_pressure, MP_ARG_INT, { .u_int=BME280_OVERSAMPLING_16X } },
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{ MP_QSTR_os_temp, MP_ARG_INT, { .u_int=BME280_OVERSAMPLING_2X } },
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{ MP_QSTR_os_humidity, MP_ARG_INT, { .u_int=BME280_OVERSAMPLING_1X } },
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{ MP_QSTR_mode, MP_ARG_INT, { .u_int=BME280_NORMAL_MODE } },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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breakout_bme280_BreakoutBME280_obj_t *self = MP_OBJ_TO_PTR2(args[ARG_self].u_obj, breakout_bme280_BreakoutBME280_obj_t);
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self->breakout->configure(
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args[ARG_filter].u_int,
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args[ARG_standby_time].u_int,
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args[ARG_os_pressure].u_int,
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args[ARG_os_temp].u_int,
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args[ARG_os_humidity].u_int,
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args[ARG_mode].u_int
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);
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return mp_const_none;
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}
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} |