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path: root/emb/pastilda/flash/drv/SST25.cpp
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Diffstat (limited to 'emb/pastilda/flash/drv/SST25.cpp')
-rw-r--r--emb/pastilda/flash/drv/SST25.cpp240
1 files changed, 0 insertions, 240 deletions
diff --git a/emb/pastilda/flash/drv/SST25.cpp b/emb/pastilda/flash/drv/SST25.cpp
deleted file mode 100644
index 954188a..0000000
--- a/emb/pastilda/flash/drv/SST25.cpp
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * This file is part of the pastilda project.
- * hosted at http://github.com/thirdpin/pastilda
- *
- * Copyright (C) 2016 Third Pin LLC
- * Written by Anastasiia Lazareva <a.lazareva@thirdpin.ru>
- *
- * 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/>.
- */
-
-#include "SST25.h"
-
-SST25::SST25(SPI_ext *spi, Pinout nss_pin)
-{
- _spi = spi;
-
- _nss = new GPIO_ext(nss_pin);
- _nss->mode_setup(GPIO_CPP_Extension::Mode::OUTPUT, GPIO_CPP_Extension::PullMode::NO_PULL);
- _nss->set_output_options(GPIO_CPP_Extension::OutputType::PUSH_PULL, GPIO_CPP_Extension::Speed::FAST_50MHz);
- _nss->set();
-}
-
-int SST25::read_sectors(uint32_t sector, uint32_t count, void *buf)
-{
- if(sector >= (SECTOR_COUNT)) {
- return (0);
- }
-
- uint32_t address = (sector * SECTOR_SIZE);
- uint32_t data_len = SECTOR_SIZE * count;
-
- while ((address + data_len - 1) > (MEMORY_SIZE - 1)) {
- count -= 1;
- data_len = SECTOR_SIZE * count;
- }
-
- read(address, data_len, (uint8_t*)buf);
- return (count);
-}
-int SST25::write_sectors(uint32_t sector, uint32_t count, const void *buf)
-{
- if(sector >= (SECTOR_COUNT)) {
- return (0);
- }
-
- uint32_t start_address = (sector * SECTOR_SIZE);
- uint32_t data_len = SECTOR_SIZE * count;
-
- for(int i = 0; i < count; i++)
- {
- erase_sector(sector + i);
- uint32_t address = ((sector + i) * SECTOR_SIZE);
-
- for (int j = 0; j < PAGE_COUNT_IN_SECTOR; j++) {
- page_program(address, (uint8_t*)buf, PAGE_SIZE);
- address += PAGE_SIZE;
- buf += PAGE_SIZE;
- }
- }
- return (count);
-}
-void SST25::disable_wtite_protection()
-{
- enable_write_status_register();
- write_status_register(DISABLE_WRITE_PROTECTION);
-}
-
-void SST25::read(uint32_t address, uint32_t count, uint8_t* buf)
-{
- wait_write_complete();
- select_device();
- uint8_t tx[4] = {OPCODE_READ, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF)};
- write_buffer(tx, 4);
- uint8_t rx[count];
- read_buffer(rx, count);
- release_device();
- memcpy(buf, rx, count);
- //return (rx);
-}
-void SST25::read_high_speed(uint32_t address, uint32_t count, uint8_t* buf)
-{
- wait_write_complete();
- select_device();
- uint8_t tx[5] = {OPCODE_FAST_READ, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF), DUMMY_BYTE};
- write_buffer(tx, 5);
- uint8_t rx[count];
- read_buffer(rx, count);
- release_device();
- memcpy(buf, rx, count);
- //return (rx);
-}
-void SST25::page_program(uint32_t address, uint8_t *data, uint16_t count)
-{
- wait_write_complete();
- enable_write();
- select_device();
- uint16_t total_size = (4 + count);
- uint8_t tx[total_size] = {OPCODE_PAGE_PROGRAM, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF)};
- for (int i = 0, j = 4; i < count; i++, j++) {
- tx[j] = data[i];
- }
- write_buffer(tx, total_size);
- release_device();
-}
-void SST25::erase_sector(uint32_t sector)
-{
- wait_write_complete();
- enable_write();
- uint32_t address = (sector * SECTOR_SIZE);
- select_device();
- uint8_t tx[4] = {OPCODE_SECTOR_ERASE, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF)};
- write_buffer(tx, 4);
- release_device();
-}
-void SST25::erase_block_32K(uint32_t start_sector)
-{
- wait_write_complete();
- enable_write();
- uint32_t address = (start_sector * SECTOR_SIZE);
- select_device();
- uint8_t tx[4] = {OPCODE_BLOCK_ERASE_32K, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF)};
- write_buffer(tx, 4);
- release_device();
-}
-void SST25::erase_block_64K(uint32_t start_sector)
-{
- wait_write_complete();
- enable_write();
- uint32_t address = (start_sector * SECTOR_SIZE);
- select_device();
- uint8_t tx[4] = {OPCODE_BLOCK_ERASE_64K, ((address >> 16) & 0xFF), ((address >> 8) & 0xFF), (address & 0xFF)};
- write_buffer(tx, 4);
- release_device();
-}
-void SST25::erase_full_chip()
-{
- wait_write_complete();
- enable_write();
- select_device();
- _spi->send(OPCODE_CHIP_ERASE);
- release_device();
-}
-uint8_t SST25::read_status_register()
-{
- select_device();
- uint8_t tx[1] = {OPCODE_RDSR};
- write_buffer(tx, 1);
- uint8_t rx[1];
- read_buffer(rx, 1);
- release_device();
- return (rx[0]);
-}
-void SST25::enable_write()
-{
- wait_write_complete();
- select_device();
- _spi->send(OPCODE_WREN);
- release_device();
-}
-void SST25::disable_write()
-{
- wait_write_complete();
- select_device();
- _spi->send(OPCODE_WRDI);
- release_device();
-}
-void SST25::enable_write_status_register()
-{
- //wait_write_complete();
- select_device();
- _spi->send(OPCODE_EWSR);
- release_device();
-}
-void SST25::write_status_register(uint8_t data)
-{
- //wait_write_complete();
- select_device();
- uint8_t tx[2] = {OPCODE_WRSR, data};
- write_buffer(tx, 2);
- release_device();
-}
-uint16_t SST25::read_id()
-{
- select_device();
- uint8_t tx[4] = {OPCODE_RDID_ALT, 0, 0, 0};
- write_buffer(tx, 4);
- uint8_t rx[2];
- read_buffer(rx, 2);
- release_device();
- return ((rx[0] << 8) | rx[1]);
-}
-uint32_t SST25::read_jedec_id()
-{
- select_device();
- uint8_t tx[1] = {OPCODE_JEDEC_ID};
- write_buffer(tx, 1);
- uint8_t rx[3];
- read_buffer(rx, 3);
- release_device();
- return ((rx[0] << 16) | (rx[1] << 8) | rx[3]);
-}
-
-void SST25::select_device()
-{
- _nss->clear();
- while(_spi->get_flag_status(Flag::BUSY_FLAG));
-}
-void SST25::release_device()
-{
- _nss->set();
-}
-void SST25::write_buffer(const uint8_t *buf, int len)
-{
- while(len--)
- _spi->send(*buf++);
-}
-void SST25::read_buffer(uint8_t *buf, int len)
-{
- uint8_t res = _spi->read();
- while(len--)
- *buf++ = _spi->read();
-}
-void SST25::wait_write_complete()
-{
- uint8_t status = read_status_register();
- while (status & SST25_SR_BUSY) {
- status = read_status_register();
- }
-}
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