diff options
| -rw-r--r-- | ports/esp32/machine_i2c.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/ports/esp32/machine_i2c.c b/ports/esp32/machine_i2c.c index 732a62f47..12b86e4aa 100644 --- a/ports/esp32/machine_i2c.c +++ b/ports/esp32/machine_i2c.c @@ -146,12 +146,15 @@ static void machine_hw_i2c_print(const mp_print_t *print, mp_obj_t self_in, mp_p } mp_obj_t machine_hw_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) { - MP_MACHINE_I2C_CHECK_FOR_LEGACY_SOFTI2C_CONSTRUCTION(n_args, n_kw, all_args); + // Create a SoftI2C instance if no id is specified (or is -1) but other arguments are given + if (n_args != 0) { + MP_MACHINE_I2C_CHECK_FOR_LEGACY_SOFTI2C_CONSTRUCTION(n_args, n_kw, all_args); + } // Parse args enum { ARG_id, ARG_scl, ARG_sda, ARG_freq, ARG_timeout }; static const mp_arg_t allowed_args[] = { - { MP_QSTR_id, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, + { MP_QSTR_id, MP_ARG_INT, {.u_int = I2C_NUM_0} }, { MP_QSTR_scl, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, { MP_QSTR_sda, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, { MP_QSTR_freq, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 400000} }, @@ -161,7 +164,9 @@ mp_obj_t machine_hw_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_ mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); // Get I2C bus - mp_int_t i2c_id = mp_obj_get_int(args[ARG_id].u_obj); + mp_int_t i2c_id = args[ARG_id].u_int; + + // Check if the I2C bus is valid if (!(I2C_NUM_0 <= i2c_id && i2c_id < I2C_NUM_MAX)) { mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("I2C(%d) doesn't exist"), i2c_id); } |