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stmhal: Allow to name I2C busses, and give them names for pyboard.

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This commit is contained in:
Damien George 2015-05-27 17:16:26 +01:00
parent 1775b65e07
commit 0e6f5e08e1
3 changed files with 41 additions and 13 deletions
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6
stmhal/boards/PYBV10/mpconfigboard.h
View file

@ -46,11 +46,11 @@
#define MICROPY_HW_UART6_PORT (GPIOC)
#define MICROPY_HW_UART6_PINS (GPIO_PIN_6 | GPIO_PIN_7)
// X-skin: X9=PB6=SCL, X10=PB7=SDA
// I2C busses
#define MICROPY_HW_I2C1_NAME "X"
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_NAME "Y"
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)

6
stmhal/boards/PYBV4/mpconfigboard.h
View file

@ -46,11 +46,11 @@
#define MICROPY_HW_UART6_PORT (GPIOC)
#define MICROPY_HW_UART6_PINS (GPIO_PIN_6 | GPIO_PIN_7)
// X-skin: X9=PB6=SCL, X10=PB7=SDA
// I2C busses
#define MICROPY_HW_I2C1_NAME "X"
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_NAME "Y"
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)

42
stmhal/i2c.c
View file

@ -201,12 +201,18 @@ STATIC inline bool in_master_mode(pyb_i2c_obj_t *self) { return self->i2c->Init.
STATIC const pyb_i2c_obj_t pyb_i2c_obj[] = {
#if defined(MICROPY_HW_I2C1_SCL)
{{&pyb_i2c_type}, &I2CHandle1},
#else
{{&pyb_i2c_type}, NULL},
#endif
#if defined(MICROPY_HW_I2C2_SCL)
{{&pyb_i2c_type}, &I2CHandle2},
#else
{{&pyb_i2c_type}, NULL},
#endif
#if defined(MICROPY_HW_I2C3_SCL)
{{&pyb_i2c_type}, &I2CHandle3},
#else
{{&pyb_i2c_type}, NULL},
#endif
};
@ -297,16 +303,38 @@ STATIC mp_obj_t pyb_i2c_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);
// get i2c number
mp_int_t i2c_id = mp_obj_get_int(args[0]) - 1;
// check i2c number
if (!(0 <= i2c_id && i2c_id < MP_ARRAY_SIZE(pyb_i2c_obj) && pyb_i2c_obj[i2c_id].i2c != NULL)) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "I2C bus %d does not exist", i2c_id + 1));
// work out i2c bus
int i2c_id = 0;
if (MP_OBJ_IS_STR(args[0])) {
const char *port = mp_obj_str_get_str(args[0]);
if (0) {
#ifdef MICROPY_HW_I2C1_NAME
} else if (strcmp(port, MICROPY_HW_I2C1_NAME) == 0) {
i2c_id = 1;
#endif
#ifdef MICROPY_HW_I2C2_NAME
} else if (strcmp(port, MICROPY_HW_I2C2_NAME) == 0) {
i2c_id = 2;
#endif
#ifdef MICROPY_HW_I2C3_NAME
} else if (strcmp(port, MICROPY_HW_I2C3_NAME) == 0) {
i2c_id = 3;
#endif
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
"I2C(%s) does not exist", port));
}
} else {
i2c_id = mp_obj_get_int(args[0]);
if (i2c_id < 1 || i2c_id > MP_ARRAY_SIZE(pyb_i2c_obj)
|| pyb_i2c_obj[i2c_id].i2c == NULL) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
"I2C(%d) does not exist", i2c_id));
}
}
// get I2C object
const pyb_i2c_obj_t *i2c_obj = &pyb_i2c_obj[i2c_id];
const pyb_i2c_obj_t *i2c_obj = &pyb_i2c_obj[i2c_id - 1];
if (n_args > 1 || n_kw > 0) {
// start the peripheral