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Error Handling Improvement and Dynamic Memory Allocation #1192

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Error Handling Improvement and Dynamic Memory Allocation #1192

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94 changes: 57 additions & 37 deletions i2c/scanner/i2cscanner.c
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Original file line number Diff line number Diff line change
Expand Up @@ -10,41 +10,61 @@

static char tag[] = "i2cscanner";

void task_i2cscanner(void *ignore) {
ESP_LOGD(tag, ">> i2cScanner");
i2c_config_t conf;
conf.mode = I2C_MODE_MASTER;
conf.sda_io_num = SDA_PIN;
conf.scl_io_num = SCL_PIN;
conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
conf.master.clk_speed = 100000;
i2c_param_config(I2C_NUM_0, &conf);

i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0);

int i;
esp_err_t espRc;
printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
printf("00: ");
for (i=3; i< 0x78; i++) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i << 1) | I2C_MASTER_WRITE, 1 /* expect ack */);
i2c_master_stop(cmd);

espRc = i2c_master_cmd_begin(I2C_NUM_0, cmd, 10/portTICK_PERIOD_MS);
if (i%16 == 0) {
printf("\n%.2x:", i);
}
if (espRc == 0) {
printf(" %.2x", i);
} else {
printf(" --");
}
//ESP_LOGD(tag, "i=%d, rc=%d (0x%x)", i, espRc, espRc);
i2c_cmd_link_delete(cmd);
}
printf("\n");
vTaskDelete(NULL);
typedef void (*i2c_scan_callback_t)(uint8_t address, bool success);

void i2c_scanner_task(void *parameters) {
ESP_LOGD(tag, ">> i2cScanner");

i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = SDA_PIN,
.scl_io_num = SCL_PIN,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master = {
.clk_speed = 100000,
},
};
i2c_param_config(I2C_NUM_0, &conf);
i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0);

printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
printf("00: ");

for (int i = 3; i < 0x78; i++) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
if (!cmd) {
ESP_LOGE(tag, "Failed to create I2C command");
continue;
}
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i << 1) | I2C_MASTER_WRITE, true);
i2c_master_stop(cmd);

esp_err_t espRc = i2c_master_cmd_begin(I2C_NUM_0, cmd, 10 / portTICK_PERIOD_MS);
bool success = (espRc == ESP_OK);
if (success) {
printf(" %.2x", i);
} else {
printf(" --");
}
i2c_cmd_link_delete(cmd);
}
printf("\n");

vTaskDelete(NULL);
}

void i2c_scanner_init(i2c_scan_callback_t callback) {
xTaskCreate(i2c_scanner_task, "i2c_scanner_task", configMINIMAL_STACK_SIZE * 3, NULL, 5, NULL);
}

void i2c_scan_callback(uint8_t address, bool success) {
if (success) {
ESP_LOGI(tag, "Device found at address 0x%x", address);
} else {
ESP_LOGI(tag, "No device found at address 0x%x", address);
}
}