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spi_flash: Add option to log warnings if (spuriously) writing zero bits to ones

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Won't work for SPIFFS, maybe some other implementations?
This commit is contained in:
Angus Gratton
2017-11-29 14:26:57 +11:00
committed by Angus Gratton
parent 892b3ff14b
commit f7ac41c2da
2 changed files with 29 additions and 0 deletions
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15
components/spi_flash/flash_ops.c
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@@ -260,6 +260,21 @@ static IRAM_ATTR esp_rom_spiflash_result_t spi_flash_write_inner(uint32_t target
break;
}
#ifdef CONFIG_SPI_FLASH_WARN_SETTING_ZERO_TO_ONE
for (int r = 0; r < read_len; r += sizeof(uint32_t)) {
int r_w = r / sizeof(uint32_t); // index in words (r is index in bytes)
uint32_t write = src_addr[i_w + r_w];
uint32_t before = before_buf[r_w];
if ((before & write) != write) {
spi_flash_guard_end();
ESP_LOGW(TAG, "Write at offset 0x%x requests 0x%08x but will write 0x%08x -> 0x%08x",
target + i + r, write, before, before & write);
spi_flash_guard_start();
}
}
#endif
res = esp_rom_spiflash_write(target + i, &src_addr[i_w], read_len);
if (res != ESP_ROM_SPIFLASH_RESULT_OK) {
break;