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esp32/machine_i2c: Allow boards to configure I2C pins using new macros. 

Following how SPI is configured (and how stm32 does it).
This commit is contained in:
Mike Causer 2021-05-14 13:23:44 +10:00 committed by Damien George
parent 97fee47716
commit 538b9a9be5
1 changed files with 15 additions and 10 deletions
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25
ports/esp32/machine_i2c.c
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@ -32,14 +32,19 @@
#include "driver/i2c.h"
#define I2C_0_DEFAULT_SCL (GPIO_NUM_18)
#define I2C_0_DEFAULT_SDA (GPIO_NUM_19)
#ifndef MICROPY_HW_I2C0_SCL
#define MICROPY_HW_I2C0_SCL (GPIO_NUM_18)
#define MICROPY_HW_I2C0_SDA (GPIO_NUM_19)
#endif
#ifndef MICROPY_HW_I2C1_SCL
#if CONFIG_IDF_TARGET_ESP32
#define I2C_1_DEFAULT_SCL (GPIO_NUM_25)
#define I2C_1_DEFAULT_SDA (GPIO_NUM_26)
#define MICROPY_HW_I2C1_SCL (GPIO_NUM_25)
#define MICROPY_HW_I2C1_SDA (GPIO_NUM_26)
#else
#define I2C_1_DEFAULT_SCL (GPIO_NUM_9)
#define I2C_1_DEFAULT_SDA (GPIO_NUM_8)
#define MICROPY_HW_I2C1_SCL (GPIO_NUM_9)
#define MICROPY_HW_I2C1_SDA (GPIO_NUM_8)
#endif
#endif
#define I2C_DEFAULT_TIMEOUT_US (10000) // 10ms
@ -149,11 +154,11 @@ mp_obj_t machine_hw_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_
self->base.type = &machine_hw_i2c_type;
self->port = i2c_id;
if (self->port == I2C_NUM_0) {
self->scl = I2C_0_DEFAULT_SCL;
self->sda = I2C_0_DEFAULT_SDA;
self->scl = MICROPY_HW_I2C0_SCL;
self->sda = MICROPY_HW_I2C0_SDA;
} else {
self->scl = I2C_1_DEFAULT_SCL;
self->sda = I2C_1_DEFAULT_SDA;
self->scl = MICROPY_HW_I2C1_SCL;
self->sda = MICROPY_HW_I2C1_SDA;
}
first_init = true;
}