From b489a1b12f2f574ed24237601b3797b58d302196 Mon Sep 17 00:00:00 2001 From: jaseg Date: Thu, 27 Feb 2020 14:39:18 +0100 Subject: Add a bunch of deps --- controller/fw/spi_flash.c | 189 ---------------------------------------------- 1 file changed, 189 deletions(-) delete mode 100644 controller/fw/spi_flash.c (limited to 'controller/fw/spi_flash.c') diff --git a/controller/fw/spi_flash.c b/controller/fw/spi_flash.c deleted file mode 100644 index 98c773f..0000000 --- a/controller/fw/spi_flash.c +++ /dev/null @@ -1,189 +0,0 @@ -/* Library for SPI flash 25* devices. - * Copyright (c) 2014 Multi-Tech Systems - * Copyright (c) 2020 Jan Goette - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "spi_flash.h" -#include - -enum { - WRITE_ENABLE = 0x06, - WRITE_DISABLE = 0x04, - READ_IDENTIFICATION = 0x9F, - READ_STATUS = 0x05, - WRITE_STATUS = 0x01, - READ_DATA = 0x03, - READ_DATA_FAST = 0x0B, - PAGE_PROGRAM = 0x02, - SECTOR_ERASE = 0xD8, - BULK_ERASE = 0xC7, - DEEP_POWER_DOWN = 0xB9, - DEEP_POWER_DOWN_RELEASE = 0xAB, -}; - -enum { - STATUS_SRWD = 0x80, // 0b 1000 0000 - STATUS_BP2 = 0x10, // 0b 0001 0000 - STATUS_BP1 = 0x08, // 0b 0000 1000 - STATUS_BP0 = 0x04, // 0b 0000 0100 - STATUS_WEL = 0x02, // 0b 0000 0010 - STATUS_WIP = 0x01, // 0b 0000 0001 -}; - - -static void spif_write_page(struct spi_flash_if *spif, size_t addr, size_t len, const char* data); -static uint8_t spif_read_status(struct spi_flash_if *spif); -static void spif_enable_write(struct spi_flash_if *spif); -static void spif_wait_for_write(struct spi_flash_if *spif); - -#define low_byte(x) (x&0xff) -#define mid_byte(x) ((x>>8)&0xff) -#define high_byte(x) ((x>>16)&0xff) - - -void spif_init(struct spi_flash_if *spif, size_t page_size, uint32_t spi_base, void (*cs)(bool val)) { - - spif->spi_base = spi_base; - spif->page_size = page_size; - spif->cs = cs; - spif->cs(1); - - spi_reset(spif->spi_base); - spi_init_master(spif->spi_base, - SPI_CR1_BAUDRATE_FPCLK_DIV_2, - SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE, - SPI_CR1_CPHA_CLK_TRANSITION_2, - SPI_CR1_DFF_8BIT, - SPI_CR1_MSBFIRST); - - spi_enable_software_slave_management(spif->spi_base); - spi_set_nss_high(spif->spi_base); - - spi_enable(spif->spi_base); - - spif->cs(0); - spi_send(spif->spi_base, READ_IDENTIFICATION); - spif->id.mfg_id = spi_xfer(spif->spi_base, 0); - spif->id.type = spi_xfer(spif->spi_base, 0); - spif->id.size = 1<spi_base, 0); - spif->cs(1); -} - -void spif_read(struct spi_flash_if *spif, size_t addr, size_t len, char* data) { - spif_enable_write(spif); - - spif->cs(0); - spi_xfer(spif->spi_base, READ_DATA); - spi_xfer(spif->spi_base, high_byte(addr)); - spi_xfer(spif->spi_base, mid_byte(addr)); - spi_xfer(spif->spi_base, low_byte(addr)); - - for (size_t i = 0; i < len; i++) - data[i] = spi_xfer(spif->spi_base, 0); - - spif->cs(1); -} - -void spif_write(struct spi_flash_if *spif, size_t addr, size_t len, const char* data) { - size_t written = 0, write_size = 0; - - while (written < len) { - write_size = spif->page_size - ((addr + written) % spif->page_size); - if (written + write_size > len) - write_size = len - written; - - spif_write_page(spif, addr + written, write_size, data + written); - written += write_size; - } -} - -static uint8_t spif_read_status(struct spi_flash_if *spif) { - spif->cs(0); - spi_xfer(spif->spi_base, READ_STATUS); - uint8_t status = spi_xfer(spif->spi_base, 0); - spif->cs(1); - - return status; -} - -void spif_clear_sector(struct spi_flash_if *spif, size_t addr) { - spif_enable_write(spif); - - spif->cs(0); - spi_xfer(spif->spi_base, SECTOR_ERASE); - spi_xfer(spif->spi_base, high_byte(addr)); - spi_xfer(spif->spi_base, mid_byte(addr)); - spi_xfer(spif->spi_base, low_byte(addr)); - spif->cs(1); - - spif_wait_for_write(spif); -} - -void spif_clear_mem(struct spi_flash_if *spif) { - spif_enable_write(spif); - - spif->cs(0); - spi_xfer(spif->spi_base, BULK_ERASE); - spif->cs(1); - - spif_wait_for_write(spif); -} - -static void spif_write_page(struct spi_flash_if *spif, size_t addr, size_t len, const char* data) { - spif_enable_write(spif); - - spif->cs(0); - spi_xfer(spif->spi_base, PAGE_PROGRAM); - spi_xfer(spif->spi_base, high_byte(addr)); - spi_xfer(spif->spi_base, mid_byte(addr)); - spi_xfer(spif->spi_base, low_byte(addr)); - - for (size_t i = 0; i < len; i++) { - spi_xfer(spif->spi_base, data[i]); - } - - spif->cs(1); - spif_wait_for_write(spif); -} - -static void spif_enable_write(struct spi_flash_if *spif) { - spif->cs(0); - spi_xfer(spif->spi_base, WRITE_ENABLE); - spif->cs(1); -} - -static void spif_wait_for_write(struct spi_flash_if *spif) { - while (spif_read_status(spif) & STATUS_WIP) - for (int i = 0; i < 800; i++) - ; -} - -void spif_deep_power_down(struct spi_flash_if *spif) { - spif->cs(0); - spi_xfer(spif->spi_base, DEEP_POWER_DOWN); - spif->cs(1); -} - -void spif_wakeup(struct spi_flash_if *spif) { - spif->cs(0); - spi_xfer(spif->spi_base, DEEP_POWER_DOWN_RELEASE); - spif->cs(1); -} -- cgit