stm: add timer to storage cache so it can be flushed.
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318aec6ba9
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@ -2,6 +2,7 @@
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#include "std.h"
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#include "misc.h"
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#include "systick.h"
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#include "led.h"
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#include "flash.h"
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#include "storage.h"
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@ -17,6 +18,7 @@ static uint32_t cache_flash_sector_id;
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static uint32_t cache_flash_sector_start;
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static uint32_t cache_flash_sector_size;
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static bool cache_dirty;
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static uint32_t sys_tick_counter_last_write;
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static void cache_flush(void) {
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if (cache_dirty) {
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@ -50,6 +52,7 @@ void storage_init(void) {
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cache_flash_sector_id = 0;
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cache_dirty = false;
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is_initialised = true;
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sys_tick_counter_last_write = 0;
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}
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}
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@ -61,6 +64,11 @@ uint32_t storage_get_block_count(void) {
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return FLASH_PART1_START_BLOCK + FLASH_PART1_NUM_BLOCKS;
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}
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bool storage_needs_flush(void) {
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// wait 2 seconds after last write to flush
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return cache_dirty && sys_tick_has_passed(sys_tick_counter_last_write, 2000);
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}
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void storage_flush(void) {
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cache_flush();
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}
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@ -143,6 +151,7 @@ bool storage_write_block(const uint8_t *src, uint32_t block) {
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uint32_t flash_addr = FLASH_MEM_START_ADDR + (block - FLASH_PART1_START_BLOCK) * BLOCK_SIZE;
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uint8_t *dest = cache_get_addr_for_write(flash_addr);
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memcpy(dest, src, BLOCK_SIZE);
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sys_tick_counter_last_write = sys_tick_counter;
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return true;
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} else {
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@ -1,6 +1,7 @@
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void storage_init(void);
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uint32_t storage_get_block_size(void);
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uint32_t storage_get_block_count(void);
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bool storage_needs_flush(void);
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void storage_flush(void);
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bool storage_read_block(uint8_t *dest, uint32_t block);
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bool storage_write_block(const uint8_t *src, uint32_t block);
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