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/** GSM状态机 */
/** States used for the GSM state machine */
#define GSM_POWER_ON 0
#define GSM_POWER_ON_WAIT 1
#define GSM_SET_PIN 2
#define GSM_CHECK_CONNECTION 3
#define GSM_CHECK_CONNECTION_WAIT 5
#define GSM_CONNECTION_RESPONSE 6
#define GSM_RUNNING 7
#define GSM_POWER_OFF 8
#define GSM_POWER_OFF_WAIT 9

/** SMS短信状态机 */
/** States used for the SMS state machine */
#define SMS_IDLE 0
#define SMS_MODE 1
#define SMS_ALPHABET 2
#define SMS_NUMBER 3
#define SMS_CONTENT 4
#define SMS_WAIT 5

/** 打电话(呼叫)状态机 */
/** States used for the call state machine */
#define CALL_IDLE 0
#define CALL_NUMBER 1
#define CALL_SETUP 2
#define CALL_SETUP_WAIT 3
#define CALL_RESPONSE 4
#define CALL_ACTIVE 5