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| author | Damien George <damien.p.george@gmail.com> | 2016-04-22 10:35:26 +0100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-04-22 10:35:26 +0100 |
| commit | 67a6d31955cb7ff8985f9f96675a70870eea4089 (patch) | |
| tree | cfbd4f3c8d19ab5581e2ce7735cf87771b3236ac /esp8266/esp_mphal.c | |
| parent | a2d5d84ecca175fbfbf42e892d6376efd08758eb (diff) | |
| download | micropython-67a6d31955cb7ff8985f9f96675a70870eea4089.tar.gz micropython-67a6d31955cb7ff8985f9f96675a70870eea4089.zip | |
esp8266: Allow GPIO16 to be used as a pin in the uPy pin HAL.
Now I2C works with GPIO16 as the SCL or SDA pin.
Diffstat (limited to 'esp8266/esp_mphal.c')
| -rw-r--r-- | esp8266/esp_mphal.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/esp8266/esp_mphal.c b/esp8266/esp_mphal.c index 686f54bc31..53c03f62da 100644 --- a/esp8266/esp_mphal.c +++ b/esp8266/esp_mphal.c @@ -215,6 +215,16 @@ void mp_hal_signal_dupterm_input(void) { void mp_hal_pin_config_od(mp_hal_pin_obj_t pin_id) { const pyb_pin_obj_t *pin = &pyb_pin_obj[pin_id]; + + if (pin->phys_port == 16) { + // configure GPIO16 as input with output register holding 0 + WRITE_PERI_REG(PAD_XPD_DCDC_CONF, (READ_PERI_REG(PAD_XPD_DCDC_CONF) & 0xffffffbc) | 1); + WRITE_PERI_REG(RTC_GPIO_CONF, READ_PERI_REG(RTC_GPIO_CONF) & ~1); + WRITE_PERI_REG(RTC_GPIO_ENABLE, (READ_PERI_REG(RTC_GPIO_ENABLE) & ~1)); // input + WRITE_PERI_REG(RTC_GPIO_OUT, (READ_PERI_REG(RTC_GPIO_OUT) & ~1)); // out=0 + return; + } + ETS_GPIO_INTR_DISABLE(); PIN_FUNC_SELECT(pin->periph, pin->func); GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin->phys_port)), |