error.go

package espradio

/*
#include "include.h"
*/
import "C"

import "strconv"

// Error is an error from the radio stack.
type Error C.esp_err_t

func (e Error) Error() string {
	switch {
	case e >= C.ESP_ERR_MEMPROT_BASE:
		return "espradio: memprot error " + strconv.FormatInt(int64(int32(e)), 10)
	case e >= C.ESP_ERR_HW_CRYPTO_BASE:
		return "espradio: unknown hw crypto error"
	case e >= C.ESP_ERR_FLASH_BASE:
		return "espradio: unknown flash error"
	case e >= C.ESP_ERR_MESH_BASE:
		return "espradio: unknown mesh error"
	case e >= C.ESP_ERR_WIFI_BASE:
		code := int32(e)
		switch code {
		case 0x3001: // ESP_ERR_WIFI_NOT_INIT
			return "espradio: wifi not initialized (driver was not installed by esp_wifi_init)"
		case 0x3002: // ESP_ERR_WIFI_NOT_STARTED
			return "espradio: wifi not started (call esp_wifi_start)"
		default:
			return "espradio: wifi error " + strconv.FormatInt(int64(code), 10)
		}
	default:
		switch e {
		case C.ESP_OK:
			return "espradio: no error" // invalid usage of the Error type
		case C.ESP_ERR_NO_MEM:
			return "espradio: no memory"
		case C.ESP_ERR_INVALID_ARG:
			return "espradio: invalid argument"
		default:
			return "espradio: unknown error"
		}
	}
}

// makeError returns an error (using the Error type) if the error code is
// non-zero, otherwise it returns nil.
func makeError(errCode C.esp_err_t) error {
	if errCode != 0 {
		return Error(errCode)
	}
	return nil
}