diff options
Diffstat (limited to 'extmod/machine_i2c.h')
| -rw-r--r-- | extmod/machine_i2c.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/extmod/machine_i2c.h b/extmod/machine_i2c.h index f5af6656f..f951c1f21 100644 --- a/extmod/machine_i2c.h +++ b/extmod/machine_i2c.h @@ -28,15 +28,24 @@ #include "py/obj.h" +#define MP_MACHINE_I2C_FLAG_READ (0x01) // if not set then it's a write +#define MP_MACHINE_I2C_FLAG_STOP (0x02) + +typedef struct _mp_machine_i2c_buf_t { + size_t len; + uint8_t *buf; +} mp_machine_i2c_buf_t; + // I2C protocol // the first 4 methods can be NULL, meaning operation is not supported +// transfer_single only needs to be set if transfer=mp_machine_i2c_transfer_adaptor typedef struct _mp_machine_i2c_p_t { int (*start)(mp_obj_base_t *obj); int (*stop)(mp_obj_base_t *obj); int (*read)(mp_obj_base_t *obj, uint8_t *dest, size_t len, bool nack); int (*write)(mp_obj_base_t *obj, const uint8_t *src, size_t len); - int (*readfrom)(mp_obj_base_t *obj, uint16_t addr, uint8_t *dest, size_t len, bool stop); - int (*writeto)(mp_obj_base_t *obj, uint16_t addr, const uint8_t *src, size_t len, bool stop); + int (*transfer)(mp_obj_base_t *obj, uint16_t addr, size_t n, mp_machine_i2c_buf_t *bufs, unsigned int flags); + int (*transfer_single)(mp_obj_base_t *obj, uint16_t addr, size_t len, uint8_t *buf, unsigned int flags); } mp_machine_i2c_p_t; typedef struct _mp_machine_soft_i2c_obj_t { @@ -50,7 +59,7 @@ typedef struct _mp_machine_soft_i2c_obj_t { extern const mp_obj_type_t machine_i2c_type; extern const mp_obj_dict_t mp_machine_soft_i2c_locals_dict; -int mp_machine_soft_i2c_readfrom(mp_obj_base_t *self_in, uint16_t addr, uint8_t *dest, size_t len, bool stop); -int mp_machine_soft_i2c_writeto(mp_obj_base_t *self_in, uint16_t addr, const uint8_t *src, size_t len, bool stop); +int mp_machine_i2c_transfer_adaptor(mp_obj_base_t *self, uint16_t addr, size_t n, mp_machine_i2c_buf_t *bufs, unsigned int flags); +int mp_machine_soft_i2c_transfer(mp_obj_base_t *self, uint16_t addr, size_t n, mp_machine_i2c_buf_t *bufs, unsigned int flags); #endif // MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H |