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