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| author | Damien George <damien.p.george@gmail.com> | 2016-11-22 22:49:54 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-11-23 17:05:37 +1100 |
| commit | b983cfaf41b94aeb0cb1404d654c26d3a6893a4e (patch) | |
| tree | 80864d53046d33f9a1ef15fd28fe62fcfcdb142b /extmod/machine_i2c.h | |
| parent | 63a5df3cb4c5dec1cb84b86750bb87ace4c1629e (diff) | |
| download | micropython-b983cfaf41b94aeb0cb1404d654c26d3a6893a4e.tar.gz micropython-b983cfaf41b94aeb0cb1404d654c26d3a6893a4e.zip | |
extmod/machine_i2c: Add a C-level I2C-protocol, refactoring soft I2C.
Diffstat (limited to 'extmod/machine_i2c.h')
| -rw-r--r-- | extmod/machine_i2c.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/extmod/machine_i2c.h b/extmod/machine_i2c.h index 03fa6422ad..c971f4b195 100644 --- a/extmod/machine_i2c.h +++ b/extmod/machine_i2c.h @@ -29,6 +29,17 @@ #include "py/obj.h" +// I2C protocol +// the first 4 methods can be NULL, meaning operation is not supported +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); + 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); +} mp_machine_i2c_p_t; + extern const mp_obj_type_t machine_i2c_type; #endif // __MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H__ |