read/write first attempt

This commit is contained in:
Martin Brodbeck 2024-02-07 09:32:11 +01:00
parent 6006fd39d7
commit ed59135498
4 changed files with 37 additions and 10 deletions

View file

@ -25,7 +25,10 @@ pico_sdk_init()
# Add executable. Default name is the project name, version 0.1
add_executable(pico_keyer pico_keyer.cpp )
add_executable(pico_keyer
pico_keyer.cpp
settings.cpp
)
pico_set_program_name(pico_keyer "pico_keyer")
pico_set_program_version(pico_keyer "0.1")
@ -48,6 +51,7 @@ target_link_libraries(pico_keyer
hardware_flash
hardware_exception
pico_flash
pico_mem_ops
)
pico_add_extra_outputs(pico_keyer)

View file

@ -1,5 +1,5 @@
#include <stdio.h>
#include "pico/stdlib.h"
#include <pico/stdlib.h>
#include "settings.h"
@ -16,5 +16,17 @@ int main()
puts("Hello, world!");
Settings settings;
settings.mode = Mode::IAMBIC_A;
store_settings(settings);
printf("Iambic mode (stored): %d", static_cast<int>(settings.mode));
sleep_ms(1000);
Settings newSettings = read_settings();
printf("Iambic mode (loaded): %d", static_cast<int>(newSettings.mode));
while(true) {
sleep_ms(1000);
}
return 0;
}

View file

@ -1,19 +1,30 @@
#include <cstring>
#include "settings.h"
namespace
{
const size_t PAGE_SIZE{256};
const size_t NVS_SIZE{4096};
const uint32_t FLASH_WRITE_START = PICO_FLASH_SIZE_BYTES - NVS_SIZE;
constexpr const uint32_t FLASH_TARGET_OFFSET = PICO_FLASH_SIZE_BYTES - FLASH_SECTOR_SIZE;
const uint8_t *flash_target_contents = (const uint8_t *) (XIP_BASE + FLASH_TARGET_OFFSET);
}
void flash_store_callback(void *settings)
{
flash_range_erase(FLASH_WRITE_START, NVS_SIZE);
flash_range_program(FLASH_WRITE_START, (const uint8_t *)settings, PAGE_SIZE);
int writeSize = (sizeof(struct Settings) / FLASH_PAGE_SIZE) + 1;
flash_range_erase(FLASH_TARGET_OFFSET, FLASH_SECTOR_SIZE);
flash_range_program(FLASH_TARGET_OFFSET, reinterpret_cast<uint8_t *>(settings), FLASH_PAGE_SIZE * writeSize);
}
void store_settings(Settings &settings)
{
flash_safe_execute(flash_store_callback, (void *)&settings, 1000);
uint8_t *settingsAsBytes = reinterpret_cast<uint8_t *>(&settings);
flash_safe_execute(flash_store_callback, settingsAsBytes, 1000);
}
Settings read_settings() {
Settings settings;
memcpy(&settings, flash_target_contents, sizeof(struct Settings));
return settings;
}

View file

@ -1,7 +1,7 @@
#ifndef SETTINGS_H
#define SETTINGS_H
#include "pico/flash.h"
#include <pico/flash.h>
enum class Mode
{
@ -16,7 +16,7 @@ struct Settings
};
void store_settings(Settings &settings);
Settings read_settings();
#endif