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| author | Damien George <damien.p.george@gmail.com> | 2014-06-17 19:57:17 +0100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2014-06-17 19:57:17 +0100 |
| commit | bcb3ab451baefdebb48589f822986c0ce8588b18 (patch) | |
| tree | eb3dee250979f959b38a9996f97b76e2c43013d6 | |
| parent | 2547928148aefcf163953057979e14f46bef1170 (diff) | |
| download | micropython-bcb3ab451baefdebb48589f822986c0ce8588b18.tar.gz micropython-bcb3ab451baefdebb48589f822986c0ce8588b18.zip | |
stmhal: Toggle LED using ODR ^= pin_mask.
| -rw-r--r-- | stmhal/led.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/stmhal/led.c b/stmhal/led.c index 8cef02425a..e23b30ab75 100644 --- a/stmhal/led.c +++ b/stmhal/led.c @@ -148,18 +148,9 @@ void led_toggle(pyb_led_t led) { } #endif + // toggle the output data register to toggle the LED state const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin; - GPIO_TypeDef *gpio = led_pin->gpio; - - // We don't know if we're turning the LED on or off, but we don't really - // care. Just invert the state. - if (gpio->ODR & led_pin->pin_mask) { - // pin is high, make it low - gpio->BSRRH = led_pin->pin_mask; - } else { - // pin is low, make it high - gpio->BSRRL = led_pin->pin_mask; - } + led_pin->gpio->ODR ^= led_pin->pin_mask; } int led_get_intensity(pyb_led_t led) { |