Init

2026-03-06 12:29:58 +01:00
commit ab00a59f29
21 changed files with 1564 additions and 0 deletions
--- a/main/atecc608a.c
+++ b/main/atecc608a.c
@@ -0,0 +1,103 @@
+#include "atecc608a.h"
+
+#include "sdkconfig.h"
+#include <esp_log.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+
+static const char *TAG = "atecc608b";
+
+/* -------------------------------------------------------------------------
+ * Module-private state
+ * ---------------------------------------------------------------------- */
+static ATCAIfaceCfg s_atecc_cfg;
+static uint8_t      s_config_data[128];
+static bool         s_config_valid = false;
+
+/* -------------------------------------------------------------------------
+ * Internal helpers
+ * ---------------------------------------------------------------------- */
+static bool read_config_zone(void)
+{
+    ATCA_STATUS status = atcab_read_config_zone(s_config_data);
+
+    if (status != ATCA_SUCCESS) {
+        ESP_LOGI(TAG, "Failed to read config zone (0x%02X) – check wiring", status);
+        return false;
+    }
+
+    s_config_valid = true;
+    return true;
+}
+
+/* -------------------------------------------------------------------------
+ * Public API
+ * ---------------------------------------------------------------------- */
+bool atecc608B_init(void)
+{
+    ESP_LOGI(TAG, "Initialising ATECC608B...");
+
+    s_atecc_cfg.iface_type        = ATCA_I2C_IFACE;
+    s_atecc_cfg.devtype           = ATECC608B;
+    s_atecc_cfg.atcai2c.address   = CONFIG_ATCA_I2C_ADDRESS;
+    s_atecc_cfg.atcai2c.bus       = 0;
+    s_atecc_cfg.atcai2c.baud      = CONFIG_ATCA_I2C_BAUD_RATE;
+    s_atecc_cfg.wake_delay        = 1500;
+    s_atecc_cfg.rx_retries        = 20;
+
+    ESP_LOGI(TAG, "SDA=GPIO%d SCL=GPIO%d addr=0x%02X (7-bit 0x%02X)",
+             CONFIG_ATCA_I2C_SDA_PIN, CONFIG_ATCA_I2C_SCL_PIN,
+             CONFIG_ATCA_I2C_ADDRESS, CONFIG_ATCA_I2C_ADDRESS >> 1);
+
+    ATCA_STATUS status = atcab_init(&s_atecc_cfg);
+    if (status != ATCA_SUCCESS) {
+        ESP_LOGE(TAG, "atcab_init failed: 0x%02X", status);
+        return false;
+    }
+
+    vTaskDelay(pdMS_TO_TICKS(100));
+
+    status = atcab_wakeup();
+    if (status != ATCA_SUCCESS) {
+        ESP_LOGW(TAG, "Wake returned 0x%02X (may be normal)", status);
+    }
+    atcab_idle();
+
+    vTaskDelay(pdMS_TO_TICKS(50));
+
+    ESP_LOGI(TAG, "ATECC608B initialised");
+    return true;
+}
+
+void atecc608B_print_config(void)
+{
+    ESP_LOGI(TAG, "=== ATECC608B Configuration Zone ===");
+
+    uint8_t serial[9];
+    ATCA_STATUS status = atcab_read_serial_number(serial);
+    if (status != ATCA_SUCCESS) {
+        ESP_LOGE(TAG, "Failed to read serial number (0x%02X) – check wiring", status);
+        return;
+    }
+
+    if (!read_config_zone()) {
+        return;
+    }
+    uint8_t *c = s_config_data;
+
+    for (int i = 0; i < 128; i++) {
+        if (i % 16 == 0) printf("\n0x%02X: ", i);
+        printf("%02X ", c[i]);
+    }
+    printf("\n\n");
+
+    ESP_LOGI(TAG, "=== End of ATECC608B Configuration ===");
+}
+
+void atecc608B_release(void)
+{
+    atcab_release();
+}