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/* *****************************************************************************
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Created: 12/18/09 02:42:00
* Copyright (c) 2009 Perry L. Hung. All rights reserved.
*
* ****************************************************************************/
/**
* @file wiring_digital.c
*
* @brief
*/
#include "wiring.h"
#include "io.h"
#include "gpio.h"
typedef enum AFMode{
AF_NONE,
AF_PWM,
AF_SERIAL,
AF_I2C, // unused for now
AF_SPI, // unusued for now
} AFMode;
typedef struct PinGPIOMapping {
GPIO_Port *port;
uint32 pin;
} PinGPIOMapping;
/* Reset state is input floating */
static const PinGPIOMapping PIN_TO_GPIO[NR_MAPLE_PINS] = {
{GPIOA_BASE, 3}, // D0/PA3
{GPIOA_BASE, 2}, // D1/PA2
{GPIOA_BASE, 0}, // D2/PA0
{GPIOA_BASE, 1}, // D3/PA1
{GPIOB_BASE, 5}, // D4/PB5
{GPIOB_BASE, 6}, // D5/PB6
{GPIOA_BASE, 8}, // D6/PA8
{GPIOA_BASE, 9}, // D7/PA9
{GPIOA_BASE, 10}, // D8/PA10
{GPIOB_BASE, 7}, // D9/PB7
{GPIOA_BASE, 4}, // D10/PA4
{GPIOA_BASE, 7}, // D11/PA7
{GPIOA_BASE, 6}, // D12/PA6
{GPIOA_BASE, 5}, // D13/PA5
/* for later */
#if 0
{GPIOC_BASE, 0}, // D14/A0/PC0
{GPIOC_BASE, 1}, // D15/A1/PC1
{GPIOC_BASE, 2}, // D16/A2/PC2
{GPIOC_BASE, 3}, // D17/A3/PC3
{GPIOC_BASE, 4}, // D18/A4/PC4
{GPIOC_BASE, 5}, // D19/A5/PC5
#endif
};
void pinMode(uint8_t pin, WiringPinMode mode) {
uint8 outputMode;
if (pin >= NR_MAPLE_PINS)
return;
switch(mode) {
case OUTPUT:
outputMode = GPIO_MODE_OUTPUT_PP;
break;
case INPUT:
case INPUT_FLOATING:
outputMode = GPIO_MODE_INPUT_FLOATING;
break;
case INPUT_PULLUP:
outputMode = GPIO_MODE_INPUT_PU;
break;
case INPUT_PULLDOWN:
outputMode = GPIO_MODE_INPUT_PD;
break;
case PWM:
outputMode = GPIO_MODE_AF_OUTPUT_PP;
break;
default:
ASSERT(0);
return;
}
gpio_set_mode(PIN_TO_GPIO[pin].port, PIN_TO_GPIO[pin].pin, outputMode);
}
uint32_t digitalRead(uint8_t pin) {
if (pin >= NR_MAPLE_PINS)
return 0;
return (PIN_TO_GPIO[pin].port->IDR & BIT(PIN_TO_GPIO[pin].pin)) ? 1 : 0;
}
void digitalWrite(uint8_t pin, uint8_t val) {
if (pin >= NR_MAPLE_PINS)
return;
gpio_write_bit(PIN_TO_GPIO[pin].port, PIN_TO_GPIO[pin].pin, val);
}
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