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Merge branch 'contrib/github_pr_11337' into 'master'

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w5500: mac: poll VERSIONR to ensure the chip is initialised (GitHub PR)

Closes IDFGH-10061

See merge request espressif/esp-idf!23792
This commit is contained in:
Ondrej Kosta 2023-05-23 13:23:51 +08:00
commit 5da56ea361
1 changed files with 15 additions and 3 deletions
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18
components/esp_eth/src/esp_eth_mac_w5500.c
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@ -229,10 +229,22 @@ static esp_err_t w5500_verify_id(emac_w5500_t *emac)
{
esp_err_t ret = ESP_OK;
uint8_t version = 0;
ESP_GOTO_ON_ERROR(w5500_read(emac, W5500_REG_VERSIONR, &version, sizeof(version)), err, TAG, "read VERSIONR failed");
// W5500 doesn't have chip ID, we check the version number instead
ESP_GOTO_ON_FALSE(version == W5500_CHIP_VERSION, ESP_ERR_INVALID_VERSION, err, TAG, "invalid chip version, expected 0x%x, actual 0x%x", W5500_CHIP_VERSION, version);
// W5500 doesn't have chip ID, we check the version number instead
// The version number may be polled multiple times since it was observed that
// some W5500 units may return version 0 when it is read right after the reset
ESP_LOGD(TAG, "Waiting W5500 to start & verify version...");
uint32_t to = 0;
for (to = 0; to < emac->sw_reset_timeout_ms / 10; to++) {
ESP_GOTO_ON_ERROR(w5500_read(emac, W5500_REG_VERSIONR, &version, sizeof(version)), err, TAG, "read VERSIONR failed");
if (version == W5500_CHIP_VERSION) {
return ESP_OK;
}
vTaskDelay(pdMS_TO_TICKS(10));
}
ESP_LOGE(TAG, "W5500 version mismatched, expected 0x%02x, got 0x%02x", W5500_CHIP_VERSION, version);
return ESP_ERR_INVALID_VERSION;
err:
return ret;
}