int main(void){
//DDRA = 0xff;
//ENCODER_DDR &= ~(_BV(ENCODER_PIN));
//ENCODER_PORT |= (_BV(ENCODER_PIN));
sim900_init();
//ntp_decode_UTC(3580318410);
sim900_data_connect();
while(1) {}
if (sim900_poweron())
{
for (uint8_t i=0; i < 20; i++)
{
sim900_cmd_wait_response("AT+CCALR?");
if (sim900_test_last_response("1"))
{
sim900_send_sms(send_to_number, "How are you today?");
break;
}
_delay_ms(500);
}
/*
if (sim900_cmd_wait_response("AT+CCALR?"))
{
if (sim900_test_last_response("1"))
{
sim900_send_sms(send_to_number, "How are you today?");
}
}*/
}
sim900_cmd_wait_response("AT+CPOWD=1");
while(1)
{
}
while(1)
{
_delay_ms(2000);
//read_dials();
}
}
void sim900_connect(void)
{
uint8_t i = 0;
uint8_t retry = 3;
printk("connect...\r\n");
while(1) {
switch(status) {
case STATUS_POWERON:
sim900_poweron();
clear_rx_buf();
printk("wait for at done\r\n");
for(i = 0; i < retry; i++) {
sim900_write("AT\r\n", 4);
//sim900_wait(5000000);
OSTimeDlyHMSM(0, 0, 0, 400);
if(!check_at()) {
status = STATUS_CONFIG;
break;
}
clear_rx_buf();
}
break;
//case STATUS_INIT:
case STATUS_CONFIG:
printk("wait for config done\r\n");
OSTimeDlyHMSM(0, 0, 10, 0);
sim900_write("AT+CREG?\r\n", 10);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CIPMODE=1\r\n", 14);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CGATT?\r\n", 11);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CSTT=\"CMNET\"\r\n", 17);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CIICR\r\n", 10);
OSTimeDlyHMSM(0, 0, 2, 0);
printk("try to get ip address\r\n");
sim900_write("AT+CIFSR\r\n", 10);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CGATT=1\r\n", 12);
OSTimeDlyHMSM(0, 0, 0, 100);
sim900_write("AT+CGSN\r\n", 9);
OSTimeDlyHMSM(0, 0, 0, 100);
status = STATUS_CONNECTING;
break;
case STATUS_CONNECTING:
printk("wait for connecting...\r\n");
sim900_write("AT+CIPSTATUS\r\n", 14);
OSTimeDlyHMSM(0, 0, 2, 0);
for(i = 0; i < 1; i++) {
clear_rx_buf();
sim900_write(connect_cmd, strlen((char *)&connect_cmd[0]));
OSTimeDlyHMSM(0, 0, 3, 0);
if(!check_at()) {
status = STATUS_CONNECTED;
break;
}
clear_rx_buf();
}
if(i >= 1) { //retry failed
sim900_write("+++\r\n", 5);
OSTimeDlyHMSM(0, 0, 1, 0);
sim900_write("AT+CIPCLOSE\r\n", 13);
OSTimeDlyHMSM(0, 0, 1, 0);
sim900_write("AT+CIPSHUT\r\n", 12);
OSTimeDlyHMSM(0, 0, 1, 0);
status = STATUS_CONFIG;
}
break;
case STATUS_CONNECTED:
printk("Connect done!\r\n");
clear_buf();
return;
default:
break;
}
}
}
