extmod/machine_i2c: Expose soft I2C obj and readfrom/writeto funcs.

For external use by ports if needed.

1 files changed, 12 insertions, 0 deletions

diff --git a/extmod/machine_i2c.h b/extmod/machine_i2c.h
index 39f485834..d49ff01e4 100644
--- a/extmod/machine_i2c.h
+++ b/extmod/machine_i2c.h
@@ -40,6 +40,18 @@ typedef struct _mp_machine_i2c_p_t {
     int (*writeto)(mp_obj_base_t *obj, uint16_t addr, const uint8_t *src, size_t len, bool stop);
 } mp_machine_i2c_p_t;
 
+typedef struct _mp_machine_soft_i2c_obj_t {
+    mp_obj_base_t base;
+    uint32_t us_delay;
+    uint32_t us_timeout;
+    mp_hal_pin_obj_t scl;
+    mp_hal_pin_obj_t sda;
+} 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);
 
 #endif // __MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H__