diff --git a/ports/esp32s2/common-hal/busio/I2C.c b/ports/esp32s2/common-hal/busio/I2C.c index 6f19531288..772262d0a5 100644 --- a/ports/esp32s2/common-hal/busio/I2C.c +++ b/ports/esp32s2/common-hal/busio/I2C.c @@ -49,11 +49,11 @@ void never_reset_i2c(i2c_port_t num) { void i2c_reset(void) { for (i2c_port_t num = 0; num < I2C_NUM_MAX; num++) { if (i2c_status[num] == STATUS_IN_USE) { - i2c_driver_delete(num); i2c_status[num] = STATUS_FREE; } } } +static bool i2c_inited[I2C_NUM_MAX]; void common_hal_busio_i2c_construct(busio_i2c_obj_t *self, const mcu_pin_obj_t* scl, const mcu_pin_obj_t* sda, uint32_t frequency, uint32_t timeout) { @@ -121,13 +121,19 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self, if (result != ESP_OK) { mp_raise_ValueError(translate("Invalid pins")); } - result = i2c_driver_install(self->i2c_num, - I2C_MODE_MASTER, - 0, - 0, - 0); - if (result != ESP_OK) { - mp_raise_OSError(MP_EIO); + + + if (!i2c_inited[self->i2c_num]) { + result = i2c_driver_install(self->i2c_num, + I2C_MODE_MASTER, + 0, + 0, + 0); + if (result != ESP_OK) { + mp_raise_OSError(MP_EIO); + } + i2c_inited[self->i2c_num] = true; + } claim_pin(sda); @@ -143,7 +149,6 @@ void common_hal_busio_i2c_deinit(busio_i2c_obj_t *self) { return; } - i2c_driver_delete(self->i2c_num); i2c_status[self->i2c_num] = STATUS_FREE; common_hal_reset_pin(self->sda_pin);