void zg_drv_process()
{
// taskENTER_CRITICAL();
// TX frame
if (tx_ready && !cnf_pending) {
zg_send(zg_buf, zg_buf_len);
tx_ready = 0;
cnf_pending = 1;
}
// process interrupt
if (intr_occured)
{
zg_process_isr();
}
if (intr_valid) {
switch (zg_buf[1]) {
case ZG_MAC_TYPE_TXDATA_CONFIRM:
cnf_pending = 0;
break;
case ZG_MAC_TYPE_MGMT_CONFIRM:
if (zg_buf[3] == ZG_RESULT_SUCCESS) {
switch (zg_buf[2]) {
case ZG_MAC_SUBTYPE_MGMT_SCAN:
scan_cnt = 1;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_GET_PARAM:
mac[0] = zg_buf[7];
mac[1] = zg_buf[8];
mac[2] = zg_buf[9];
mac[3] = zg_buf[10];
mac[4] = zg_buf[11];
mac[5] = zg_buf[12];
zg_drv_state = DRV_STATE_SETUP_SECURITY;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_WEP_KEY:
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CALC_PSK:
memcpy(wpa_psk_key, ((zg_psk_calc_cnf_t*)&zg_buf[3])->psk, 32);
zg_drv_state = DRV_STATE_INSTALL_PSK;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_PMK_KEY:
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT_MANAGE:
zg_drv_state = DRV_STATE_START_CONN;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT:
LEDConn_on();
zg_conn_status = 1; // connected
break;
default:
break;
}
}
break;
case ZG_MAC_TYPE_RXDATA_INDICATE:
zg_drv_state = DRV_STATE_PROCESS_RX;
break;
case ZG_MAC_TYPE_MGMT_INDICATE:
switch (zg_buf[2]) {
case ZG_MAC_SUBTYPE_MGMT_IND_DISASSOC:
case ZG_MAC_SUBTYPE_MGMT_IND_DEAUTH:
LEDConn_off();
zg_conn_status = 0; // lost connection
//try to reconnect
zg_drv_state = DRV_STATE_START_CONN;
break;
case ZG_MAC_SUBTYPE_MGMT_IND_CONN_STATUS:
{
uint16_t status = (((uint16_t)(zg_buf[3]))<<8)|zg_buf[4];
if (status == 1 || status == 5) {
LEDConn_off();
zg_conn_status = 0; // not connected
}
else if (status == 2 || status == 6) {
LEDConn_on();
zg_conn_status = 1; // connected
}
}
break;
}
break;
}
intr_valid = 0;
}
switch (zg_drv_state) {
case DRV_STATE_INIT:
zg_drv_state = DRV_STATE_GET_MAC;
break;
case DRV_STATE_GET_MAC:
// get MAC address
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_GET_PARAM;
zg_buf[3] = 0;
zg_buf[4] = ZG_PARAM_MAC_ADDRESS;
spi_transfer(zg_buf, 5, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_SETUP_SECURITY:
switch (security_type) {
case ZG_SECURITY_TYPE_NONE:
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_SECURITY_TYPE_WEP:
// Install all four WEP keys on G2100
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_WEP_KEY;
zg_write_wep_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_WEP_KEY_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case ZG_SECURITY_TYPE_WPA:
case ZG_SECURITY_TYPE_WPA2:
// Initiate PSK calculation on G2100
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CALC_PSK;
zg_calc_psk_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_PSK_CALC_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
default:
break;
}
break;
case DRV_STATE_INSTALL_PSK:
// Install the PSK key on G2100
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_PMK_KEY;
zg_write_psk_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_PMK_KEY_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_ENABLE_CONN_MANAGE:
// enable connection manager
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT_MANAGE;
zg_buf[3] = 0x01; // 0x01 - enable; 0x00 - disable
zg_buf[4] = 10; // num retries to reconnect
zg_buf[5] = 0x10 | 0x02 | 0x01; // 0x10 - enable start and stop indication messages
// from G2100 during reconnection
// 0x02 - start reconnection on receiving a deauthentication
// message from the AP
// 0x01 - start reconnection when the missed beacon count
// exceeds the threshold. uses default value of
// 100 missed beacons if not set during initialization
zg_buf[6] = 0;
spi_transfer(zg_buf, 7, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_START_CONN:
{
zg_connect_req_t* cmd = (zg_connect_req_t*)&zg_buf[3];
// start connection to AP
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT;
cmd->secType = security_type;
cmd->ssidLen = ssid_len;
memset(cmd->ssid, 0, 32);
memcpy(cmd->ssid, ssid, ssid_len);
// units of 100 milliseconds
cmd->sleepDuration = 0;
if (wireless_mode == WIRELESS_MODE_INFRA)
cmd->modeBss = 1;
else if (wireless_mode == WIRELESS_MODE_ADHOC)
cmd->modeBss = 2;
spi_transfer(zg_buf, ZG_CONNECT_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
}
case DRV_STATE_PROCESS_RX:
zg_recv(zg_buf, &zg_buf_len);
rx_ready = 1;
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_IDLE:
break;
}
// taskEXIT_CRITICAL();
}
void zg_drv_process()
{
// TX frame
if (tx_ready && !cnf_pending) {
zg_send(zg_buf, zg_buf_len);
tx_ready = 0;
cnf_pending = 1;
}
// xprintf("zg_drv_process() after // TX frame");FFL_();
// process interrupt
if (intr_occured) {
zg_process_isr();
}
// xprintf("zg_drv_process() after // process interrupt");FFL_();
// uart_writestr("\n");
// uart_send_32_Hex(intr_valid);
// uart_writestr("\n");
// uart_send_32_Hex(zg_buf[1]);
// uart_writestr("\n");
// uart_send_32_Hex(zg_buf[2]);
// uart_writestr("\n");
if (intr_valid) {
switch (zg_buf[1]) {
case ZG_MAC_TYPE_TXDATA_CONFIRM:
cnf_pending = 0;
break;
case ZG_MAC_TYPE_MGMT_CONFIRM:
if (zg_buf[3] == ZG_RESULT_SUCCESS) {
switch (zg_buf[2]) {
case ZG_MAC_SUBTYPE_MGMT_SCAN:
scan_cnt = 1;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_GET_PARAM:
// uart_writestr("\ncase ZG_MAC_SUBTYPE_MGMT_REQ_GET_PARAM");
mac[0] = zg_buf[7];
mac[1] = zg_buf[8];
mac[2] = zg_buf[9];
mac[3] = zg_buf[10];
mac[4] = zg_buf[11];
mac[5] = zg_buf[12];
zg_drv_state = DRV_STATE_SETUP_SECURITY;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_WEP_KEY:
// uart_writestr("\ncase ZG_MAC_SUBTYPE_MGMT_REQ_WEP_KEY");
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CALC_PSK:
memcpy(wpa_psk_key, ((zg_psk_calc_cnf_t*)&zg_buf[3])->psk, ZG_MAX_PMK_LEN);
zg_drv_state = DRV_STATE_INSTALL_PSK;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_PMK_KEY:
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT_MANAGE:
zg_drv_state = DRV_STATE_START_CONN;
break;
case ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT:
// LEDConn_on();
zg_conn_status = 1; // connected
break;
default:
break;
}
}
break;
case ZG_MAC_TYPE_RXDATA_INDICATE:
zg_drv_state = DRV_STATE_PROCESS_RX;
break;
case ZG_MAC_TYPE_MGMT_INDICATE:
switch (zg_buf[2]) {
case ZG_MAC_SUBTYPE_MGMT_IND_DISASSOC:
case ZG_MAC_SUBTYPE_MGMT_IND_DEAUTH:
// LEDConn_off();
zg_conn_status = 0; // lost connection
//try to reconnect
zg_drv_state = DRV_STATE_START_CONN;
break;
case ZG_MAC_SUBTYPE_MGMT_IND_CONN_STATUS:
{
U16 status = (((U16)(zg_buf[3]))<<8)|zg_buf[4];
if (status == 1 || status == 5) {
// LEDConn_off();
zg_conn_status = 0; // not connected
}
else if (status == 2 || status == 6) {
// LEDConn_on();
zg_conn_status = 1; // connected
}
}
break;
}
break;
}
intr_valid = 0;
}
switch (zg_drv_state) {
case DRV_STATE_INIT:
zg_drv_state = DRV_STATE_GET_MAC;
break;
case DRV_STATE_GET_MAC:
// get MAC address
xprintf(INFO "// get MAC address");FFL_();
xprintf("[INFO]-if this is last printed wifi info, then the g2100 probably cannot be seen");FFL_();
// uart_writestr("\n// get MAC address");
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_GET_PARAM;
zg_buf[3] = 0;
zg_buf[4] = ZG_PARAM_MAC_ADDRESS;
spi_transfer(zg_buf, 5, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_SETUP_SECURITY:
switch (security_type) {
case ZG_SECURITY_TYPE_NONE:
zg_drv_state = DRV_STATE_ENABLE_CONN_MANAGE;
break;
case ZG_SECURITY_TYPE_WEP:
// Install all four WEP keys on G2100
xprintf(INFO "// Install all four WEP keys on G2100");FFL_();
// uart_writestr("\n// Install all four WEP keys on G2100");
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_WEP_KEY;
zg_write_wep_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_WEP_KEY_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case ZG_SECURITY_TYPE_WPA:
case ZG_SECURITY_TYPE_WPA2:
// Initiate PSK calculation on G2100
// RTC_print_time();
xprintf(INFO "// Initiate PSK calculation on G2100");FFL_();
// uart_writestr("\n// Initiate PSK calculation on G2100");
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CALC_PSK;
zg_calc_psk_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_PSK_CALC_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case ZG_SECURITY_TYPE_WPA_PRECALC:
case ZG_SECURITY_TYPE_WPA2_PRECALC:
// memcpy_P(wpa_psk_key, security_data, ZG_MAX_PMK_LEN);
memcpy(wpa_psk_key, security_data, ZG_MAX_PMK_LEN);
zg_drv_state = DRV_STATE_INSTALL_PSK;
default:
break;
}
break;
case DRV_STATE_INSTALL_PSK:
// Install the PSK key on G2100
xprintf(INFO "// Install the PSK key on G2100");FFL_();
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_PMK_KEY;
zg_write_psk_key(&zg_buf[3]);
spi_transfer(zg_buf, ZG_PMK_KEY_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_ENABLE_CONN_MANAGE:
// enable connection manager
xprintf(INFO "// enable connection manager");FFL_();
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT_MANAGE;
zg_buf[3] = 0x01; // 0x01 - enable; 0x00 - disable
zg_buf[4] = 10; // num retries to reconnect
zg_buf[5] = 0x10 | 0x02 | 0x01; // 0x10 - enable start and stop indication messages
// from G2100 during reconnection
// 0x02 - start reconnection on receiving a deauthentication
// message from the AP
// 0x01 - start reconnection when the missed beacon count
// exceeds the threshold. uses default value of
// 100 missed beacons if not set during initialization
zg_buf[6] = 0;
spi_transfer(zg_buf, 7, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_START_CONN:
{
zg_connect_req_t* cmd = (zg_connect_req_t*)&zg_buf[3];
// start connection to AP
xprintf(INFO "// start connection to AP");FFL_();
zg_buf[0] = ZG_CMD_WT_FIFO_MGMT;
zg_buf[1] = ZG_MAC_TYPE_MGMT_REQ;
zg_buf[2] = ZG_MAC_SUBTYPE_MGMT_REQ_CONNECT;
// adjust security_type to mask the PRECALC types
if (security_type < ZG_SECURITY_TYPE_WPA_PRECALC)
cmd->secType = security_type;
else
cmd->secType = security_type - 2;
cmd->ssidLen = ssid_len;
strncpy(cmd->ssid, ssid, ZG_MAX_SSID_LENGTH);
// units of 100 milliseconds
cmd->sleepDuration = 0;
if (wireless_mode == WIRELESS_MODE_INFRA)
cmd->modeBss = 1;
else if (wireless_mode == WIRELESS_MODE_ADHOC)
cmd->modeBss = 2;
spi_transfer(zg_buf, ZG_CONNECT_REQ_SIZE+3, 1);
zg_buf[0] = ZG_CMD_WT_FIFO_DONE;
spi_transfer(zg_buf, 1, 1);
zg_drv_state = DRV_STATE_IDLE;
break;
}
case DRV_STATE_PROCESS_RX:
zg_recv(zg_buf, &zg_buf_len);
rx_ready = 1;
zg_drv_state = DRV_STATE_IDLE;
break;
case DRV_STATE_IDLE:
break;
}
// xprintf("[END]-zg_drv_process()");FFL_();
}