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Diffstat (limited to 'extmod/machine_i2s.c')
| -rw-r--r-- | extmod/machine_i2s.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/extmod/machine_i2s.c b/extmod/machine_i2s.c new file mode 100644 index 000000000..53de7293f --- /dev/null +++ b/extmod/machine_i2s.c @@ -0,0 +1,111 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2021 Mike Teachman + * Copyright (c) 2023 Damien P. George + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "py/runtime.h" + +#if MICROPY_PY_MACHINE_I2S + +#include "extmod/modmachine.h" + +// The port must provide implementations of these low-level I2S functions. +STATIC void mp_machine_i2s_init_helper(machine_i2s_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args); +STATIC machine_i2s_obj_t *mp_machine_i2s_make_new_instance(mp_int_t i2s_id); +STATIC void mp_machine_i2s_deinit(machine_i2s_obj_t *self); + +// The port provides implementations of the above in this file. +#include MICROPY_PY_MACHINE_I2S_INCLUDEFILE + +STATIC mp_obj_t machine_i2s_make_new(const mp_obj_type_t *type, size_t n_pos_args, size_t n_kw_args, const mp_obj_t *args) { + mp_arg_check_num(n_pos_args, n_kw_args, 1, MP_OBJ_FUN_ARGS_MAX, true); + mp_int_t i2s_id = mp_obj_get_int(args[0]); + + machine_i2s_obj_t *self = mp_machine_i2s_make_new_instance(i2s_id); + + mp_map_t kw_args; + mp_map_init_fixed_table(&kw_args, n_kw_args, args + n_pos_args); + mp_machine_i2s_init_helper(self, n_pos_args - 1, args + 1, &kw_args); + + return MP_OBJ_FROM_PTR(self); +} + +// I2S.init(...) +STATIC mp_obj_t machine_i2s_init(size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { + machine_i2s_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]); + mp_machine_i2s_deinit(self); + mp_machine_i2s_init_helper(self, n_pos_args - 1, pos_args + 1, kw_args); + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2s_init_obj, 1, machine_i2s_init); + +// I2S.deinit() +STATIC mp_obj_t machine_i2s_deinit(mp_obj_t self_in) { + machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in); + mp_machine_i2s_deinit(self); + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_i2s_deinit_obj, machine_i2s_deinit); + +STATIC const mp_rom_map_elem_t machine_i2s_locals_dict_table[] = { + // Methods + { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_i2s_init_obj) }, + { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) }, + { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) }, + { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_i2s_deinit_obj) }, + { MP_ROM_QSTR(MP_QSTR_irq), MP_ROM_PTR(&machine_i2s_irq_obj) }, + #if MICROPY_PY_MACHINE_I2S_FINALISER + { MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&machine_i2s_deinit_obj) }, + #endif + + // Static method + { MP_ROM_QSTR(MP_QSTR_shift), MP_ROM_PTR(&machine_i2s_shift_obj) }, + + // Constants + { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_INT(MICROPY_PY_MACHINE_I2S_CONSTANT_RX) }, + { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_INT(MICROPY_PY_MACHINE_I2S_CONSTANT_TX) }, + { MP_ROM_QSTR(MP_QSTR_STEREO), MP_ROM_INT(STEREO) }, + { MP_ROM_QSTR(MP_QSTR_MONO), MP_ROM_INT(MONO) }, +}; +MP_DEFINE_CONST_DICT(machine_i2s_locals_dict, machine_i2s_locals_dict_table); + +STATIC const mp_stream_p_t i2s_stream_p = { + .read = machine_i2s_stream_read, + .write = machine_i2s_stream_write, + .ioctl = machine_i2s_ioctl, + .is_text = false, +}; + +MP_DEFINE_CONST_OBJ_TYPE( + machine_i2s_type, + MP_QSTR_I2S, + MP_TYPE_FLAG_ITER_IS_STREAM, + make_new, machine_i2s_make_new, + print, machine_i2s_print, + protocol, &i2s_stream_p, + locals_dict, &machine_i2s_locals_dict + ); + +#endif // MICROPY_PY_MACHINE_I2S |