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cc3200: Remove superflous parameters from the SPI API.

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This commit is contained in:
Daniel Campora 2015-03-25 19:14:59 +01:00
parent 23d7fd526d
commit e909e38871
2 changed files with 15 additions and 28 deletions
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40
cc3200/mods/pybspi.c
View File

@ -54,10 +54,10 @@
/// parameters to init the SPI bus:
///
/// from pyb import SPI
/// spi = SPI(0, SPI.MASTER, baudrate=2000000, bits=8, submode=0, cs=SPI.ACTIVE_LOW)
/// spi = SPI(2000000, bits=8, submode=0, cs=SPI.ACTIVE_LOW)
///
/// Only required parameter is mode, which must be SPI.MASTER. Submode may be 0-3.
/// Bit accepts 8, 16, 32. Chip select values are ACTIVE_LOW, ACTIVE_HIGH or NONE
/// Only required parameter is the baudrate, in Hz. Submode may be 0-3.
/// Bit accepts 8, 16, 32. Chip select values are ACTIVE_LOW and ACTIVE_HIGH
///
/// Additional method for SPI:
///
@ -182,18 +182,16 @@ STATIC void pyb_spi_print(void (*print)(void *env, const char *fmt, ...), void *
}
}
/// \method init(mode, baudrate=2000000, *, bits=8, submode=0, cs=SPI.ACTIVELOW)
/// \method init(2000000, *, bits=8, submode=0, cs=SPI.ACTIVELOW)
///
/// Initialise the SPI bus with the given parameters:
///
/// - `mode` must be `SPI.MASTER`.
/// - `baudrate` is the SCK clock rate.
/// - `bits` is the transfer width size (8, 16, 32).
/// - `submode` is the spi mode (0, 1, 2, 3).
/// - `cs` can be ACTIVELOW, ACTIVEHIGH, or NONE
static const mp_arg_t pybspi_init_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = SPI_MODE_MASTER} },
{ MP_QSTR_baudrate, MP_ARG_INT, {.u_int = PYBSPI_DEF_BAUDRATE} },
{ MP_QSTR_baudrate, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
{ MP_QSTR_submode, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_cs, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = SPI_CS_ACTIVELOW} },
@ -204,13 +202,13 @@ STATIC mp_obj_t pyb_spi_init_helper(pyb_spi_obj_t *self, mp_uint_t n_args, const
mp_arg_val_t args[MP_ARRAY_SIZE(pybspi_init_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(pybspi_init_args), pybspi_init_args, args);
uint submode = args[3].u_int;
uint cs = args[4].u_int;
uint submode = args[2].u_int;
uint cs = args[3].u_int;
uint bits;
// save the word length for later use
self->wlen = args[2].u_int / 8;
switch (args[2].u_int) {
self->wlen = args[1].u_int / 8;
switch (args[1].u_int) {
case 8:
bits = SPI_WL_8;
break;
@ -229,12 +227,12 @@ STATIC mp_obj_t pyb_spi_init_helper(pyb_spi_obj_t *self, mp_uint_t n_args, const
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
if (cs != SPI_CS_ACTIVELOW && cs != SPI_CS_ACTIVEHIGH && cs != PYBSPI_CS_NONE) {
if (cs != SPI_CS_ACTIVELOW && cs != SPI_CS_ACTIVEHIGH) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
// build the configuration
self->baudrate = args[1].u_int;
self->baudrate = args[0].u_int;
self->config = bits | cs | SPI_SW_CTRL_CS | SPI_4PIN_MODE | SPI_TURBO_OFF;
self->submode = submode;
@ -249,8 +247,8 @@ STATIC mp_obj_t pyb_spi_init_helper(pyb_spi_obj_t *self, mp_uint_t n_args, const
/// \classmethod \constructor(bus, ...)
///
/// Construct an SPI object on the given bus. `bus` can be only 0.
/// With no additional parameters, the SPI object is created but not
/// Construct an SPI object with the given baudrate.
/// With no parameters, the SPI object is created but not
/// initialised (it has the settings from the last initialisation of
/// the bus, if any). If extra arguments are given, the bus is initialised.
/// See `init` for parameters of initialisation.
@ -259,21 +257,14 @@ STATIC mp_obj_t pyb_spi_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n
// check arguments
mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
mp_int_t spi_id = mp_obj_get_int(args[0]);
// check the spi bus id
if (spi_id != 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
pyb_spi_obj_t *self = &pyb_spi_obj;
self->base.type = &pyb_spi_type;
if (n_args > 1 || n_kw > 0) {
if (n_args > 0 || n_kw > 0) {
// start the peripheral
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
pyb_spi_init_helper(self, n_args - 1, args + 1, &kw_args);
pyb_spi_init_helper(self, n_args, args, &kw_args);
}
return self;
@ -408,7 +399,6 @@ STATIC const mp_map_elem_t pyb_spi_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_send_recv), (mp_obj_t)&pyb_spi_send_recv_obj },
// class constants
{ MP_OBJ_NEW_QSTR(MP_QSTR_MASTER), MP_OBJ_NEW_SMALL_INT(SPI_MODE_MASTER) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_ACTIVE_LOW), MP_OBJ_NEW_SMALL_INT(SPI_CS_ACTIVELOW) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_ACTIVE_HIGH), MP_OBJ_NEW_SMALL_INT(SPI_CS_ACTIVEHIGH) },
};

3
cc3200/qstrdefsport.h
View File

@ -127,7 +127,6 @@ Q(FLOW_TXRX)
// for I2C class
Q(I2C)
Q(addr)
Q(baudrate)
Q(data)
Q(memaddr)
Q(addr_size)
@ -269,7 +268,6 @@ Q(RTC_WAKE)
// for SPI class
Q(SPI)
Q(mode)
Q(baudrate)
Q(bits)
Q(submode)
@ -279,7 +277,6 @@ Q(deinit)
Q(send)
Q(recv)
Q(send_recv)
Q(MASTER)
Q(ACTIVE_LOW)
Q(ACTIVE_HIGH)