d92ffd1157
* at90usb162 support * fix missing bracket * Apply suggestions from code review Co-authored-by: Ryan <fauxpark@gmail.com> Co-authored-by: Ryan <fauxpark@gmail.com>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Copyright 2020
|
|
*
|
|
* 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 <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "quantum.h"
|
|
|
|
typedef int16_t spi_status_t;
|
|
|
|
// Hardware SS pin is defined in the header so that user code can refer to it
|
|
#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
|
# define SPI_SS_PIN B0
|
|
#elif defined(__AVR_ATmega32A__)
|
|
# define SPI_SS_PIN B4
|
|
#elif defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
|
|
# define SPI_SS_PIN B2
|
|
#endif
|
|
|
|
#define SPI_STATUS_SUCCESS (0)
|
|
#define SPI_STATUS_ERROR (-1)
|
|
#define SPI_STATUS_TIMEOUT (-2)
|
|
|
|
#define SPI_TIMEOUT_IMMEDIATE (0)
|
|
#define SPI_TIMEOUT_INFINITE (0xFFFF)
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void spi_init(void);
|
|
|
|
bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor);
|
|
|
|
spi_status_t spi_write(uint8_t data);
|
|
|
|
spi_status_t spi_read(void);
|
|
|
|
spi_status_t spi_transmit(const uint8_t *data, uint16_t length);
|
|
|
|
spi_status_t spi_receive(uint8_t *data, uint16_t length);
|
|
|
|
void spi_stop(void);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|