| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 |
- /*
- * spi.h
- *
- * Copyright (C) 2019 Sylvain Munaut
- * All rights reserved.
- *
- * LGPL v3+, see LICENSE.lgpl3
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #pragma once
- #include <stdbool.h>
- struct spi_xfer_chunk {
- uint8_t *data;
- unsigned len;
- bool write;
- bool read;
- };
- #define SPI_CS_FLASH 0
- #define SPI_CS_SRAM 1
- void spi_init(void);
- void spi_xfer(unsigned cs, struct spi_xfer_chunk *xfer, unsigned n);
- void flash_cmd(uint8_t cmd);
- void flash_manuf_id(void *manuf);
- void flash_unique_id(void *id);
- void flash_read(void *dst, uint32_t addr, unsigned len);
- static inline void flash_power_up(void) { flash_cmd(0xab); };
- static inline void flash_power_down(void) { flash_cmd(0xb9); };
|
