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spi_flash: add a new function to support read the unique id

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Close https://github.com/espressif/esp-idf/pull/4255
This commit is contained in:
Cao Sen Miao
2020-11-27 19:09:40 +08:00
committed by Cao Senmiao
parent 31ba414c4d
commit 78a2dbe42a
11 changed files with 93 additions and 2 deletions
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26
components/spi_flash/spi_flash_chip_generic.c
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@@ -58,10 +58,10 @@ const DRAM_ATTR flash_chip_op_timeout_t spi_flash_chip_generic_timeout = {
.page_program_timeout = SPI_FLASH_GENERIC_PAGE_PROGRAM_TIMEOUT_MS * 1000,
};
#ifndef CONFIG_SPI_FLASH_ROM_IMPL
static const char TAG[] = "chip_generic";
#ifndef CONFIG_SPI_FLASH_ROM_IMPL
esp_err_t spi_flash_chip_generic_probe(esp_flash_t *chip, uint32_t flash_id)
{
// This is the catch-all probe function, claim the chip always if nothing
@@ -463,6 +463,27 @@ esp_err_t spi_flash_chip_generic_set_io_mode(esp_flash_t *chip)
}
#endif // CONFIG_SPI_FLASH_ROM_IMPL
esp_err_t spi_flash_chip_generic_read_unique_id(esp_flash_t *chip, uint64_t* flash_unique_id)
{
uint64_t unique_id_buf = 0;
spi_flash_trans_t transfer = {
.command = CMD_RDUID,
.miso_len = 8,
.miso_data = ((uint8_t *)&unique_id_buf),
.dummy_bitlen = 32, //RDUID command followed by 4 bytes (32 bits) of dummy clocks.
};
esp_err_t err = chip->host->driver->common_command(chip->host, &transfer);
if (unique_id_buf == 0 || unique_id_buf == UINT64_MAX) {
ESP_EARLY_LOGE(TAG, "No response from device when trying to retrieve Unique ID\n");
*flash_unique_id = unique_id_buf;
return ESP_ERR_NOT_SUPPORTED;
}
*flash_unique_id = __builtin_bswap64(unique_id_buf);
return err;
}
static const char chip_name[] = "generic";
const spi_flash_chip_t esp_flash_chip_generic = {
@@ -501,6 +522,7 @@ const spi_flash_chip_t esp_flash_chip_generic = {
.read_reg = spi_flash_chip_generic_read_reg,
.yield = spi_flash_chip_generic_yield,
.sus_setup = spi_flash_chip_generic_suspend_cmd_conf,
.read_unique_id = spi_flash_chip_generic_read_unique_id,
};
#ifndef CONFIG_SPI_FLASH_ROM_IMPL