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spp_counter packet handler rewritten in state maschine style

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matthias.ringwald@gmail.com 2012-11-20 14:42:58 +00:00
parent a1d24893cb
commit db93a898c2
1 changed files with 49 additions and 48 deletions
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97
MSP-EXP430F5438-CC256x/example/spp_counter.c
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@ -36,42 +36,36 @@ static uint8_t rfcomm_channel_nr = 1;
static uint16_t rfcomm_channel_id;
static uint8_t spp_service_buffer[100];
enum STATE {INIT, W4_LOCAL_NAME, W4_CONNECTION, W4_CHANNEL_COMPLETE, ACTIVE} ;
enum STATE state = INIT;
// Bluetooth logic
static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
static void packet_handler (uint8_t packet_type, uint8_t *packet, uint16_t size){
bd_addr_t event_addr;
uint8_t rfcomm_channel_nr;
uint16_t mtu;
uint8_t event = packet[0];
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (packet[0]) {
case BTSTACK_EVENT_STATE:
// bt stack activated, get started - set local name
if (packet[2] == HCI_STATE_WORKING) {
hci_send_cmd(&hci_write_local_name, "BlueMSP-Demo");
}
break;
case HCI_EVENT_COMMAND_COMPLETE:
if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)){
bt_flip_addr(event_addr, &packet[6]);
printf("BD-ADDR: %s\n\r", bd_addr_to_str(event_addr));
break;
}
if (COMMAND_COMPLETE_EVENT(packet, hci_write_local_name)){
hci_discoverable_control(1);
break;
}
break;
// handle events, ignore data
if (packet_type != HCI_EVENT_PACKET) return;
switch(state){
case INIT:
// bt stack activated, get started - set local name
if (packet[2] == HCI_STATE_WORKING) {
hci_send_cmd(&hci_write_local_name, "BlueMSP-Demo");
state = W4_LOCAL_NAME;
}
break;
case HCI_EVENT_LINK_KEY_REQUEST:
// deny link key request
printf("Link key request\n\r");
bt_flip_addr(event_addr, &packet[2]);
hci_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
break;
case W4_LOCAL_NAME:
if ( COMMAND_COMPLETE_EVENT(packet, hci_write_local_name) ) {
state = ACTIVE;
}
break;
case W4_CONNECTION:
switch (event) {
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Pin code request - using '0000'\n\r");
@ -86,28 +80,33 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
rfcomm_channel_id = READ_BT_16(packet, 9);
printf("RFCOMM channel %u requested for %s\n\r", rfcomm_channel_nr, bd_addr_to_str(event_addr));
rfcomm_accept_connection_internal(rfcomm_channel_id);
state = W4_CHANNEL_COMPLETE;
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
// data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n\r", packet[2]);
} else {
rfcomm_channel_id = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("\n\rRFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n\r", rfcomm_channel_id, mtu);
}
break;
case RFCOMM_EVENT_CHANNEL_CLOSED:
rfcomm_channel_id = 0;
break;
default:
break;
}
case W4_CHANNEL_COMPLETE:
if ( event != RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE ) break;
// data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n\r", packet[2]);
} else {
rfcomm_channel_id = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("\n\rRFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n\r", rfcomm_channel_id, mtu);
state = ACTIVE;
}
break;
case ACTIVE:
if (event != RFCOMM_EVENT_CHANNEL_CLOSED) break;
rfcomm_channel_id = 0;
state = W4_CONNECTION;
break;
default:
break;
}
@ -207,7 +206,9 @@ int main(void){
// turn on!
hci_power_control(HCI_POWER_ON);
// make discoverable
hci_discoverable_control(1);
// go!
run_loop_execute();