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-rw-r--r--src/spi_flash.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/src/spi_flash.c b/src/spi_flash.c
deleted file mode 100644
index 32babc5..0000000
--- a/src/spi_flash.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/**
- * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-// Example of reading/writing an external serial flash using the PL022 SPI interface
-
-#include "spi_flash.h"
-
-static inline void cs_select(uint cs_pin) {
- asm volatile("nop \n nop \n nop"); // FIXME
- gpio_put(cs_pin, 0);
- asm volatile("nop \n nop \n nop"); // FIXME
-}
-
-static inline void cs_deselect(uint cs_pin) {
- asm volatile("nop \n nop \n nop"); // FIXME
- gpio_put(cs_pin, 1);
- asm volatile("nop \n nop \n nop"); // FIXME
-}
-
-void __not_in_flash_func(flash_read)(spi_inst_t *spi, uint cs_pin, uint32_t addr, uint8_t* dest, size_t len) {
- cs_select(cs_pin);
- uint8_t cmdbuf[4] = {
- FLASH_CMD_READ,
- addr >> 16,
- addr >> 8,
- addr
- };
- spi_write_blocking(spi, cmdbuf, 4);
- spi_read_blocking(spi, 0, dest, len);
- cs_deselect(cs_pin);
-}
-
-void __not_in_flash_func(flash_write_enable)(spi_inst_t *spi, uint cs_pin) {
- cs_select(cs_pin);
- uint8_t cmd = FLASH_CMD_WRITE_EN;
- spi_write_blocking(spi, &cmd, 1);
- cs_deselect(cs_pin);
-}
-
-void __not_in_flash_func(flash_wait_done)(spi_inst_t *spi, uint cs_pin) {
- uint8_t status;
- do {
- cs_select(cs_pin);
- uint8_t buf[2] = {FLASH_CMD_STATUS, 0};
- spi_write_read_blocking(spi, buf, buf, 2);
- cs_deselect(cs_pin);
- status = buf[1];
- } while (status & FLASH_STATUS_BUSY_MASK);
-}
-
-void __not_in_flash_func(flash_sector_erase)(spi_inst_t *spi, uint cs_pin, uint32_t addr) {
- uint8_t cmdbuf[4] = {
- FLASH_CMD_SECTOR_ERASE,
- addr >> 16,
- addr >> 8,
- addr
- };
- flash_write_enable(spi, cs_pin);
- cs_select(cs_pin);
- spi_write_blocking(spi, cmdbuf, 4);
- cs_deselect(cs_pin);
- flash_wait_done(spi, cs_pin);
-}
-
-void __not_in_flash_func(flash_block_erase)(spi_inst_t *spi, uint cs_pin, uint32_t addr) {
- uint8_t cmdbuf[4] = {
- FLASH_CMD_BLOCK_ERASE,
- addr >> 16,
- addr >> 8,
- addr
- };
- flash_write_enable(spi, cs_pin);
- cs_select(cs_pin);
- spi_write_blocking(spi, cmdbuf, 4);
- cs_deselect(cs_pin);
- flash_wait_done(spi, cs_pin);
-}
-
-
-void __not_in_flash_func(flash_erase)(spi_inst_t *spi, uint cs_pin) {
- uint8_t cmdbuf[1] = {
- FLASH_CMD_CHIP_ERASE
- };
- flash_write_enable(spi, cs_pin);
- cs_select(cs_pin);
- spi_write_blocking(spi, cmdbuf, 1);
- cs_deselect(cs_pin);
- flash_wait_done(spi, cs_pin);
-}
-
-void __not_in_flash_func(flash_page_program)(spi_inst_t *spi, uint cs_pin, uint32_t addr, uint8_t* src) {
- uint8_t cmdbuf[4] = {
- FLASH_CMD_PAGE_PROGRAM,
- addr >> 16,
- addr >> 8,
- addr
- };
- flash_write_enable(spi, cs_pin);
- cs_select(cs_pin);
- spi_write_blocking(spi, cmdbuf, 4);
- spi_write_blocking(spi, src, FLASH_PAGE_SIZE);
- cs_deselect(cs_pin);
- flash_wait_done(spi, cs_pin);
-}
-
-void __not_in_flash_func(flash_write)(spi_inst_t *spi, uint cs_pin, uint32_t addr, uint8_t* src, size_t size) {
- uint8_t cmdbuf[4] = {
- FLASH_CMD_PAGE_PROGRAM,
- addr >> 16,
- addr >> 8,
- addr
- };
- flash_write_enable(spi, cs_pin);
- cs_select(cs_pin);
- spi_write_blocking(spi, cmdbuf, 4);
- spi_write_blocking(spi, src, size);
- cs_deselect(cs_pin);
- flash_wait_done(spi, cs_pin);
-}
-
-void write_entry(uint8_t* data_entry) {
- flash_read(spi_default, PICO_DEFAULT_SPI_CSN_PIN, base_addr, page_buffer, FLASH_PAGE_SIZE);
- for (uint16_t i = 0; i < FLASH_PAGE_SIZE; i += PACKET_SIZE) {
- if (page_buffer[i] == 0xFF) {
- base_addr += i;
- break;
- }
- if ((i + PACKET_SIZE) == FLASH_PAGE_SIZE) {
- base_addr += FLASH_PAGE_SIZE;
- flash_read(spi_default, PICO_DEFAULT_SPI_CSN_PIN, base_addr, page_buffer, FLASH_PAGE_SIZE);
- i = 0;
- }
- }
- flash_write(spi_default, PICO_DEFAULT_SPI_CSN_PIN, base_addr, data_entry, PACKET_SIZE);
- base_addr += PACKET_SIZE;
-}
-
-
-#ifdef FLASH_TEST
- #include "pico/multicore.h"
- #include <stdint.h>
- #include <inttypes.h>
- #include <stdio.h>
-
-
- void printbuf(uint8_t buf[FLASH_PAGE_SIZE]) {
- for (int i = 0; i < FLASH_PAGE_SIZE; ++i) {
- if (i % 16 == 15)
- printf("%02x\n", buf[i]);
- else
- printf("%02x ", buf[i]);
- }
- }
-
-
-
- void core1_entry() {
- printf("SPI flash example\n");
-
- // Enable SPI 0 at 1 MHz and connect to GPIOs
- spi_init(spi_default, 1000 * 1000 * 60);
- gpio_set_function(PICO_DEFAULT_SPI_RX_PIN, GPIO_FUNC_SPI);
- gpio_set_function(PICO_DEFAULT_SPI_TX_PIN, GPIO_FUNC_SPI);
- gpio_set_function(PICO_DEFAULT_SPI_SCK_PIN, GPIO_FUNC_SPI);
-
- // Chip select is active-low, so we'll initialise it to a driven-high state
- gpio_init(PICO_DEFAULT_SPI_CSN_PIN);
- gpio_set_dir(PICO_DEFAULT_SPI_CSN_PIN, GPIO_OUT);
- gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
-
- // flash_erase(spi_default, PICO_DEFAULT_SPI_CSN_PIN);
- // flash_sector_erase(spi_default, PICO_DEFAULT_SPI_CSN_PIN, 0);
- printf("Before program:\n");
- flash_read(spi_default, PICO_DEFAULT_SPI_CSN_PIN, 0, page_buffer, FLASH_PAGE_SIZE);
- printbuf(page_buffer);
-
- uint8_t entry[PACKET_SIZE];
-
- printf("Written Data:\n");
- printf("time (us)\t|\tstate\t|\tdep pcnt\t|\talt (m)\t|\tvel (m/s)\t|\tempty\n");
- for (uint16_t i = 0; i < 500; i++) {
- absolute_time_t now = get_absolute_time();
- uint64_t now_us= to_us_since_boot(now);
- float altitude = 10.0f * i;
- float velocity = 5.0f * i;
- uint8_t deploy_percent = (i*1000) / 200;
- printf("%"PRIu64"\t|\t%"PRIu8"\t|\t%"PRIu8"\t|\t%4.2f\t|\t%4.2f\t|\tDAWSYN_SCHRAIB\n", now_us, (uint8_t)(i), deploy_percent, altitude, velocity);
- uint32_t alt_bits = *((uint32_t *)&altitude);
- uint32_t vel_bits = *((uint32_t *)&velocity);
- entry[0] = now_us >> 56;
- entry[1] = now_us >> 48;
- entry[2] = now_us >> 40;
- entry[3] = now_us >> 32;
- entry[4] = now_us >> 24;
- entry[5] = now_us >> 16;
- entry[6] = now_us >> 8;
- entry[7] = now_us;
- entry[8] = i;
- entry[9] = deploy_percent;
- entry[10] = alt_bits >> 24;
- entry[11] = alt_bits >> 16;
- entry[12] = alt_bits >> 8;
- entry[13] = alt_bits;
- entry[14] = vel_bits >> 24;
- entry[15] = vel_bits >> 16;
- entry[16] = vel_bits >> 8;
- entry[17] = vel_bits;
- entry[18] = 'D';
- entry[19] = 'A';
- entry[20] = 'W';
- entry[21] = 'S';
- entry[22] = 'Y';
- entry[23] = 'N';
- entry[24] = '_';
- entry[25] = 'S';
- entry[26] = 'C';
- entry[27] = 'H';
- entry[28] = 'R';
- entry[29] = 'A';
- entry[30] = 'I';
- entry[31] = 'B';
- write_entry(entry);
- }
-
- printf("After program:\n");
- flash_read(spi_default, PICO_DEFAULT_SPI_CSN_PIN, 0, page_buffer, FLASH_PAGE_SIZE);
- printbuf(page_buffer);
-
- printf("\nRead Data:\n");
- printf("time (us)\t|\tstate\t|\tdep pcnt\t|\talt (m)\t|\tvel (m/s)\t|\tempty\n");
- for (uint32_t i = 0; i < base_addr; i += PACKET_SIZE) {
- flash_read(spi_default, PICO_DEFAULT_SPI_CSN_PIN, i, entry, PACKET_SIZE);
- uint64_t now_us = (((uint64_t)entry[0] << 56) | ((uint64_t)entry[1] << 48) | \
- ((uint64_t)entry[2] << 40) | ((uint64_t)entry[3] << 32) | \
- ((uint64_t)entry[4] << 24) | ((uint64_t)entry[5] << 16) | \
- ((uint64_t)entry[6] << 8) | ((uint64_t)entry[7]));
-
- uint8_t state = entry[8];
- uint8_t deploy_percent = entry[9];
-
- uint32_t alt_bits = (entry[10] << 24) | (entry[11] << 16) | (entry[12] << 8) | (entry[13]);
- uint32_t vel_bits = (entry[14] << 24) | (entry[15] << 16) | (entry[16] << 8) | (entry[17]);
- float altitude = *(float *)(&alt_bits);
- float velocity = *(float *)(&vel_bits);
- printf("%"PRIu64"\t|\t%"PRIu8"\t|\t%"PRIu8"\t|\t%4.2f\t|\t%4.2f\t|\t%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n", \
- now_us, state, deploy_percent, altitude, velocity, \
- entry[18],entry[19],entry[20],entry[21],entry[22],entry[23],entry[24],entry[25],entry[26],entry[27],entry[28],entry[29],entry[30],entry[31]);
- }
-
- }
-
- int main() {
- // Enable UART so we can print status output
- stdio_init_all();
- getchar();
-
- multicore_launch_core1(core1_entry);
-
- while (1) {
- tight_loop_contents();
- }
-
- }
-#endif
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