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Code

GPIO16 support for pinMode, digitalRead, and digitalWrite

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This commit is contained in:
Ivan Grokhotkov 2015-01-16 17:55:09 +03:00
parent 07432e5aa8
commit e40d18e107
1 changed files with 22 additions and 1 deletions
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23
cores/esp8266/core_esp8266_wiring_digital.c
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@ -27,6 +27,8 @@
#include "gpio.h"
#include "ets_sys.h"
#define MODIFY_PERI_REG(reg, mask, val) WRITE_PERI_REG(reg, (READ_PERI_REG(reg) & (~mask)) | (uint32_t) val)
#define PINCOUNT 16
static const uint32_t g_pin_muxes[PINCOUNT] = {
@ -73,6 +75,16 @@ static uint32_t g_gpio_function[PINCOUNT] = {
void pinMode(uint8_t pin, uint8_t mode)
{
if (pin == 16)
{
uint32_t val = (mode == OUTPUT) ? 1 : 0;
MODIFY_PERI_REG(PAD_XPD_DCDC_CONF, 0x43, 1);
MODIFY_PERI_REG(RTC_GPIO_CONF, 1, 0);
MODIFY_PERI_REG(RTC_GPIO_ENABLE, 1, val);
return;
}
uint32_t mux = g_pin_muxes[pin];
if (mode == INPUT)
{
@ -102,6 +114,12 @@ void pinMode(uint8_t pin, uint8_t mode)
void digitalWrite(uint8_t pin, uint8_t val)
{
if (pin == 16)
{
MODIFY_PERI_REG(RTC_GPIO_OUT, 1, (val & 1));
return;
}
uint32_t mask = 1 << pin;
if (val)
GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, mask);
@ -111,7 +129,10 @@ void digitalWrite(uint8_t pin, uint8_t val)
int digitalRead(uint8_t pin)
{
return ((gpio_input_get() >> pin) & 1);
if (pin == 16)
return (READ_PERI_REG(RTC_GPIO_IN_DATA) & 1);
else
return ((gpio_input_get() >> pin) & 1);
}
void analogWrite(uint8_t pin, int val)