diff options
Diffstat (limited to 'extmod/machine_i2s.c')
| -rw-r--r-- | extmod/machine_i2s.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/extmod/machine_i2s.c b/extmod/machine_i2s.c index 3e232d7a3..bbff560a0 100644 --- a/extmod/machine_i2s.c +++ b/extmod/machine_i2s.c @@ -32,6 +32,21 @@ #include "extmod/modmachine.h" +// Arguments for I2S() constructor and I2S.init(). +enum { + ARG_sck, + ARG_ws, + ARG_sd, + #if MICROPY_PY_MACHINE_I2S_MCK + ARG_mck, + #endif + ARG_mode, + ARG_bits, + ARG_format, + ARG_rate, + ARG_ibuf, +}; + #if MICROPY_PY_MACHINE_I2S_RING_BUF typedef struct _ring_buf_t { @@ -58,7 +73,7 @@ STATIC void copy_appbuf_to_ringbuf_non_blocking(machine_i2s_obj_t *self); #endif // MICROPY_PY_MACHINE_I2S_RING_BUF // 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 void mp_machine_i2s_init_helper(machine_i2s_obj_t *self, mp_arg_val_t *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); STATIC void mp_machine_i2s_irq_update(machine_i2s_obj_t *self); @@ -280,6 +295,27 @@ STATIC void copy_appbuf_to_ringbuf_non_blocking(machine_i2s_obj_t *self) { #endif // MICROPY_PY_MACHINE_I2S_RING_BUF +MP_NOINLINE STATIC void machine_i2s_init_helper(machine_i2s_obj_t *self, size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { + static const mp_arg_t allowed_args[] = { + { MP_QSTR_sck, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, + { MP_QSTR_ws, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, + { MP_QSTR_sd, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, + #if MICROPY_PY_MACHINE_I2S_MCK + { MP_QSTR_mck, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} }, + #endif + { MP_QSTR_mode, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = -1} }, + { MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = -1} }, + { MP_QSTR_format, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = -1} }, + { MP_QSTR_rate, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = -1} }, + { MP_QSTR_ibuf, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = -1} }, + }; + + mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; + mp_arg_parse_all(n_pos_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); + + mp_machine_i2s_init_helper(self, args); +} + STATIC void machine_i2s_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in); mp_printf(print, "I2S(id=%u,\n" @@ -313,7 +349,7 @@ STATIC mp_obj_t machine_i2s_make_new(const mp_obj_type_t *type, size_t n_pos_arg 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); + machine_i2s_init_helper(self, n_pos_args - 1, args + 1, &kw_args); return MP_OBJ_FROM_PTR(self); } @@ -322,7 +358,7 @@ STATIC mp_obj_t machine_i2s_make_new(const mp_obj_type_t *type, size_t n_pos_arg 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); + 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); |