arduino/esp8266
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Implement digital IO functions

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This commit is contained in:
Ivan Grokhotkov
2014-11-21 21:23:27 +03:00
parent e21371d6d0
commit 66cac95b4b
4 changed files with 83 additions and 40 deletions
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2
cores/esp8266/wiring.c
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@ -67,5 +67,5 @@ void delayMicroseconds(unsigned int us)
void init()
{
// system_timer_reinit();
initPins();
}

77
cores/esp8266/wiring_digital.c
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@ -27,19 +27,90 @@
#define ARDUINO_MAIN
#include "wiring_private.h"
#include "pins_arduino.h"
#include "eagle_soc.h"
#include "gpio.h"
#define PINCOUNT 16
static const uint32_t g_pin_muxes[PINCOUNT] = {
[0] = PERIPHS_IO_MUX_GPIO0_U,
[1] = PERIPHS_IO_MUX_U0TXD_U,
[2] = PERIPHS_IO_MUX_GPIO2_U,
[3] = PERIPHS_IO_MUX_U0RXD_U,
[4] = PERIPHS_IO_MUX_GPIO4_U,
[5] = PERIPHS_IO_MUX_GPIO5_U,
// These 6 pins are used for SPI flash interface
[6] = 0,
[7] = 0,
[8] = 0,
[9] = 0,
[10] = 0,
[11] = 0,
[12] = PERIPHS_IO_MUX_MTDI_U,
[13] = PERIPHS_IO_MUX_MTCK_U,
[14] = PERIPHS_IO_MUX_MTMS_U,
[15] = PERIPHS_IO_MUX_MTDO_U,
};
static const uint32_t g_pin_funcs[PINCOUNT] = {
[0] = FUNC_GPIO0,
[1] = FUNC_GPIO1,
[2] = FUNC_GPIO2,
[3] = FUNC_GPIO3,
[4] = FUNC_GPIO4,
[5] = FUNC_GPIO5,
[12] = FUNC_GPIO12,
[13] = FUNC_GPIO13,
[14] = FUNC_GPIO14,
[15] = FUNC_GPIO15,
};
void pinMode(uint8_t pin, uint8_t mode)
{
uint32_t mux = g_pin_muxes[pin];
if (mode == INPUT)
{
gpio_output_set(0, 0, 0, 1 << pin);
PIN_PULLUP_DIS(mux);
}
else if (mode == INPUT_PULLUP)
{
gpio_output_set(0, 0, 0, 1 << pin);
PIN_PULLUP_EN(mux);
}
else
{
gpio_output_set(0, 0, 1 << pin, 0);
}
}
void digitalWrite(uint8_t pin, uint8_t val)
{
uint32_t set = ((val & 1) << pin);
uint32_t clr = (((~val) & 1) << pin);
gpio_output_set(set, clr, 0, 0);
}
int digitalRead(uint8_t pin)
{
return LOW;
return ((gpio_input_get() >> pin) & 1);
}
void initPins()
{
gpio_init();
for (int i = 0; i < PINCOUNT; ++i)
{
uint32_t mux = g_pin_muxes[i];
if (mux)
{
uint32_t func = g_pin_funcs[i];
PIN_FUNC_SELECT(mux, func);
}
}
}

9
cores/esp8266/wiring_private.h
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@ -34,13 +34,6 @@
extern "C"{
#endif
#ifndef cbi
#define cbi(sfr, bit)
#endif
#ifndef sbi
#define sbi(sfr, bit)
#endif
#define EXTERNAL_INT_0 0
#define EXTERNAL_INT_1 1
#define EXTERNAL_INT_2 2
@ -54,6 +47,8 @@ extern "C"{
typedef void (*voidFuncPtr)(void);
void initPins();
#ifdef __cplusplus
} // extern "C"
#endif