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| author | Damien George <damien.p.george@gmail.com> | 2016-05-02 11:15:36 +0100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-05-02 11:15:36 +0100 |
| commit | 70ff7350e7ff369ab81d1f55e6645a5828928385 (patch) | |
| tree | 68da580aaeddc1f6e83cba7f4d50be646d909572 /stmhal/i2c.c | |
| parent | 26fd0ac5712677ddf2b02f07f4b289b0baf39bce (diff) | |
stmhal, cc3200: Change i2c.scan() method to scan addresses 0x08-0x77.
A standard I2C address is 7 bits but addresses 0b0000xxx and 0b1111xxx
are reserved. The scan() method is changed to reflect this, along with
the docs.
Diffstat (limited to 'stmhal/i2c.c')
| -rw-r--r-- | stmhal/i2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/stmhal/i2c.c b/stmhal/i2c.c index e52db0170..9f6506b01 100644 --- a/stmhal/i2c.c +++ b/stmhal/i2c.c @@ -475,7 +475,7 @@ STATIC mp_obj_t pyb_i2c_is_ready(mp_obj_t self_in, mp_obj_t i2c_addr_o) { STATIC MP_DEFINE_CONST_FUN_OBJ_2(pyb_i2c_is_ready_obj, pyb_i2c_is_ready); /// \method scan() -/// Scan all I2C addresses from 0x01 to 0x7f and return a list of those that respond. +/// Scan all I2C addresses from 0x08 to 0x77 and return a list of those that respond. /// Only valid when in master mode. STATIC mp_obj_t pyb_i2c_scan(mp_obj_t self_in) { pyb_i2c_obj_t *self = self_in; @@ -486,7 +486,7 @@ STATIC mp_obj_t pyb_i2c_scan(mp_obj_t self_in) { mp_obj_t list = mp_obj_new_list(0, NULL); - for (uint addr = 1; addr <= 127; addr++) { + for (uint addr = 0x08; addr <= 0x77; addr++) { for (int i = 0; i < 10; i++) { HAL_StatusTypeDef status = HAL_I2C_IsDeviceReady(self->i2c, addr << 1, 10, 200); if (status == HAL_OK) { |