ANTStatus ant_disable_radio(void)
{
int iLockResult;
ANTStatus ret = ANT_STATUS_FAILED;
ANT_FUNC_START();
ANT_DEBUG_V("getting stEnabledStatusLock in %s", __FUNCTION__);
iLockResult = pthread_mutex_lock(&stEnabledStatusLock);
if(iLockResult) {
ANT_ERROR("disable failed to get state lock: %s", strerror(iLockResult));
goto out;
}
ANT_DEBUG_V("got stEnabledStatusLock in %s", __FUNCTION__);
if (g_fnStateCallback) {
g_fnStateCallback(RADIO_STATUS_DISABLING);
}
ant_disable();
if (g_fnStateCallback) {
g_fnStateCallback(ant_radio_enabled_status());
}
ret = ANT_STATUS_SUCCESS;
ANT_DEBUG_V("releasing stEnabledStatusLock in %s", __FUNCTION__);
pthread_mutex_unlock(&stEnabledStatusLock);
ANT_DEBUG_V("released stEnabledStatusLock in %s", __FUNCTION__);
out:
ANT_FUNC_END();
return ret;
}
void doReset(ant_rx_thread_info_t *stRxThreadInfo)
{
int iMutexLockResult;
ANT_FUNC_START();
/* Chip was reset or other error, only way to recover is to
* close and open ANT chardev */
stRxThreadInfo->ucChipResetting = 1;
if (g_fnStateCallback) {
g_fnStateCallback(RADIO_STATUS_RESETTING);
}
stRxThreadInfo->ucRunThread = 0;
ANT_DEBUG_V("getting stEnabledStatusLock in %s", __FUNCTION__);
iMutexLockResult = pthread_mutex_lock(stRxThreadInfo->pstEnabledStatusLock);
if (iMutexLockResult < 0) {
ANT_ERROR("chip was reset, getting state mutex failed: %s",
strerror(iMutexLockResult));
stRxThreadInfo->stRxThread = 0;
stRxThreadInfo->ucChipResetting = 0;
} else {
ANT_DEBUG_V("got stEnabledStatusLock in %s", __FUNCTION__);
stRxThreadInfo->stRxThread = 0; /* spoof our handle as closed so we don't
* try to join ourselves in disable */
ant_disable();
int enableResult = ant_enable();
stRxThreadInfo->ucChipResetting = 0;
if (enableResult) { /* failed */
if (g_fnStateCallback) {
g_fnStateCallback(RADIO_STATUS_DISABLED);
}
} else { /* success */
if (g_fnStateCallback) {
g_fnStateCallback(RADIO_STATUS_RESET);
}
}
ANT_DEBUG_V("releasing stEnabledStatusLock in %s", __FUNCTION__);
pthread_mutex_unlock(stRxThreadInfo->pstEnabledStatusLock);
ANT_DEBUG_V("released stEnabledStatusLock in %s", __FUNCTION__);
}
ANT_FUNC_END();
}
ANTStatus ant_radio_hard_reset(void)
{
ANTStatus result_status = ANT_STATUS_NOT_SUPPORTED;
ANT_FUNC_START();
#ifdef ANT_IOCTL_RESET
ant_channel_type eChannel;
int iLockResult;
result_status = ANT_STATUS_FAILED;
ANT_DEBUG_V("getting stEnabledStatusLock in %s", __FUNCTION__);
iLockResult = pthread_mutex_lock(&stEnabledStatusLock);
if(iLockResult) {
ANT_ERROR("enable failed to get state lock: %s", strerror(iLockResult));
goto out;
}
ANT_DEBUG_V("got stEnabledStatusLock in %s", __FUNCTION__);
stRxThreadInfo.ucChipResetting = 1;
if (g_fnStateCallback)
g_fnStateCallback(RADIO_STATUS_RESETTING);
#ifdef ANT_IOCTL_RESET_PARAMETER
ioctl(stRxThreadInfo.astChannels[0].iFd, ANT_IOCTL_RESET, ANT_IOCTL_RESET_PARAMETER);
#else
ioctl(stRxThreadInfo.astChannels[0].iFd, ANT_IOCTL_RESET);
#endif // ANT_IOCTL_RESET_PARAMETER
ant_disable();
if (ant_enable()) { /* failed */
if (g_fnStateCallback)
g_fnStateCallback(RADIO_STATUS_DISABLED);
} else { /* success */
if (g_fnStateCallback)
g_fnStateCallback(RADIO_STATUS_RESET);
result_status = ANT_STATUS_SUCCESS;
}
stRxThreadInfo.ucChipResetting = 0;
ANT_DEBUG_V("releasing stEnabledStatusLock in %s", __FUNCTION__);
pthread_mutex_unlock(&stEnabledStatusLock);
ANT_DEBUG_V("released stEnabledStatusLock in %s", __FUNCTION__);
out:
#endif // ANT_IOCTL_RESET
ANT_FUNC_END();
return result_status;
}
/*
* This thread opens a Bluez HCI socket and waits for ANT messages.
*/
void *ANTHCIRxThread(void *pvHCIDevice)
{
int ret = ANT_STATUS_SUCCESS;
int rxSocket;
int len;
unsigned char buf[HCI_MAX_EVENT_SIZE];
int result;
struct hci_filter eventVendorFilter;
ANT_FUNC_START();
(void)pvHCIDevice; //unused waring
ANT_DEBUG_D("Entering ANTHCIRxThread");
rxSocket = create_hci_sock();
if (rxSocket < 0)
{
ANT_DEBUG_E("can't open HCI socket in rx thread: %s", strerror(errno));
ret = ANT_STATUS_FAILED;
goto out;
}
eventVendorFilter.type_mask = TYPE_MASK_EVENT_PACKET;
eventVendorFilter.event_mask[0] = 0;
eventVendorFilter.event_mask[1] = EVENT_MASK_1_EVENT_VENDOR;
eventVendorFilter.opcode = htobs(ANT_EVENT_VENDOR_CODE);
if (setsockopt(rxSocket, SOL_HCI, HCI_FILTER, &eventVendorFilter, sizeof(eventVendorFilter)) < 0)
{
ANT_ERROR("failed to set socket options: %s", strerror(errno));
ret = ANT_STATUS_FAILED;
goto close;
}
/* continue running as long as not terminated */
while (get_and_set_radio_status() == RADIO_STATUS_ENABLED)
{
struct pollfd p;
int n;
p.fd = rxSocket;
p.events = POLLIN;
ANT_DEBUG_V(" RX: Polling HCI for data...");
/* poll socket, wait for ANT messages */
while ((n = poll(&p, 1, 2500)) == -1)
{
if (errno == EAGAIN || errno == EINTR)
continue;
ANT_ERROR("failed to poll socket: %s", strerror(errno));
ret = ANT_STATUS_FAILED;
goto close;
}
/* we timeout once in a while */
/* this let's us the chance to check if we were terminated */
if (0 == n)
{
ANT_DEBUG_V(" RX: Timeout");
continue;
}
ANT_DEBUG_D("New HCI data available, reading...");
/* read newly arrived data */
/* TBD: rethink assumption about single arrival */
while ((len = read(rxSocket, buf, sizeof(buf))) < 0)
{
if (errno == EAGAIN || errno == EINTR)
continue;
ANT_ERROR("failed to read socket: %s", strerror(errno));
ret = ANT_STATUS_FAILED;
goto close;
}
hci_event_packet_t *event_packet = (hci_event_packet_t *)buf;
int hci_payload_len = validate_hci_event_packet(event_packet, len);
if (hci_payload_len == -1)
{
// part of the message is incorrect, ignore it. validate_event_packet will log error
continue;
}
ANT_SERIAL(event_packet->hci_payload, hci_payload_len, 'R');
if(RxParams.pfRxCallback != NULL)
{
RxParams.pfRxCallback(hci_payload_len, event_packet->hci_payload);
}
else
{
ANT_ERROR("Can't send rx message - no callback registered");
}
}
close:
result = pthread_mutex_trylock(&enableLock);
ANT_DEBUG_D("rx thread close: trylock enableLock returned %d", result);
if (result == 0)
{
ANT_DEBUG_W("rx thread socket has unexpectedly crashed");
#if USE_EXTERNAL_POWER_LIBRARY
if (RxParams.pfStateCallback)
RxParams.pfStateCallback(RADIO_STATUS_DISABLING);
ant_disable();
get_and_set_radio_status();
#else
radio_status = RADIO_STATUS_DISABLED;
#endif
RxParams.thread = 0;
pthread_mutex_unlock(&enableLock);
}
else if (result == EBUSY)
{
ANT_DEBUG_V("rx thread socket was closed");
}
else
{
ANT_ERROR("rx thread close: trylock failed: %s", strerror(result));
}
if (-1 == close(rxSocket))
{
ANT_ERROR("failed to close hci device (socket handle=%#x): %s", rxSocket, strerror(errno));
}
else
{
ANT_DEBUG_D("closed hci device (socket handle=%#x)", rxSocket);
}
out:
ANT_FUNC_END();
pthread_exit((void *)ret);
#if defined(ANDROID)
return 0;
#endif
}
/*
* This thread waits for ANT messages from a VFS file.
*/
void *fnRxThread(void *ant_rx_thread_info)
{
int iMutexLockResult;
int iPollRet;
ant_rx_thread_info_t *stRxThreadInfo;
struct pollfd astPollFd[NUM_POLL_FDS];
ant_channel_type eChannel;
ANT_FUNC_START();
stRxThreadInfo = (ant_rx_thread_info_t *)ant_rx_thread_info;
for (eChannel = 0; eChannel < NUM_ANT_CHANNELS; eChannel++) {
astPollFd[eChannel].fd = stRxThreadInfo->astChannels[eChannel].iFd;
astPollFd[eChannel].events = EVENTS_TO_LISTEN_FOR;
}
// Fill out poll request for the shutdown signaller.
astPollFd[EVENTFD_IDX].fd = stRxThreadInfo->iRxShutdownEventFd;
astPollFd[EVENTFD_IDX].events = POLL_IN;
// Reset the waiting for response, since we don't want a stale value if we were reset.
stRxThreadInfo->bWaitingForKeepaliveResponse = ANT_FALSE;
/* continue running as long as not terminated */
while (stRxThreadInfo->ucRunThread) {
/* Wait for data available on any file (transport path), shorter wait if we just timed out. */
int timeout = stRxThreadInfo->bWaitingForKeepaliveResponse ? KEEPALIVE_TIMEOUT : ANT_POLL_TIMEOUT;
iPollRet = poll(astPollFd, NUM_POLL_FDS, timeout);
if (!iPollRet) {
if(!stRxThreadInfo->bWaitingForKeepaliveResponse)
{
stRxThreadInfo->bWaitingForKeepaliveResponse = ANT_TRUE;
// Keep alive is done on a separate thread so that rxThread can handle flow control during
// the message.
pthread_t thread;
// Don't care if it failed as the consequence is just a missed keep-alive.
pthread_create(&thread, NULL, fnKeepAliveThread, NULL);
// Detach the thread so that we don't need to join it later.
pthread_detach(thread);
ANT_DEBUG_V("poll timed out, checking exit cond");
} else
{
ANT_DEBUG_E("No response to keepalive, attempting recovery.");
doReset(stRxThreadInfo);
goto out;
}
} else if (iPollRet < 0) {
ANT_ERROR("unhandled error: %s, attempting recovery.", strerror(errno));
doReset(stRxThreadInfo);
goto out;
} else {
for (eChannel = 0; eChannel < NUM_ANT_CHANNELS; eChannel++) {
if (areAllFlagsSet(astPollFd[eChannel].revents, EVENT_HARD_RESET)) {
ANT_ERROR("Hard reset indicated by %s. Attempting recovery.",
stRxThreadInfo->astChannels[eChannel].pcDevicePath);
doReset(stRxThreadInfo);
goto out;
} else if (areAllFlagsSet(astPollFd[eChannel].revents, EVENT_CHIP_SHUTDOWN)) {
/* chip reported it was unexpectedly disabled */
ANT_DEBUG_D(
"poll hang-up from %s. exiting rx thread", stRxThreadInfo->astChannels[eChannel].pcDevicePath);
doReset(stRxThreadInfo);
goto out;
} else if (areAllFlagsSet(astPollFd[eChannel].revents, EVENT_DATA_AVAILABLE)) {
ANT_DEBUG_D("data on %s. reading it",
stRxThreadInfo->astChannels[eChannel].pcDevicePath);
// Doesn't matter what data we received, we know the chip is alive.
stRxThreadInfo->bWaitingForKeepaliveResponse = ANT_FALSE;
if (readChannelMsg(eChannel, &stRxThreadInfo->astChannels[eChannel]) < 0) {
// set flag to exit out of Rx Loop
stRxThreadInfo->ucRunThread = 0;
}
} else if (areAllFlagsSet(astPollFd[eChannel].revents, POLLNVAL)) {
ANT_ERROR("poll was called on invalid file descriptor %s. Attempting recovery.",
stRxThreadInfo->astChannels[eChannel].pcDevicePath);
doReset(stRxThreadInfo);
goto out;
} else if (areAllFlagsSet(astPollFd[eChannel].revents, POLLERR)) {
ANT_ERROR("Unknown error from %s. Attempting recovery.",
stRxThreadInfo->astChannels[eChannel].pcDevicePath);
doReset(stRxThreadInfo);
goto out;
} else if (astPollFd[eChannel].revents) {
ANT_DEBUG_W("unhandled poll result %#x from %s",
astPollFd[eChannel].revents,
stRxThreadInfo->astChannels[eChannel].pcDevicePath);
}
}
// Now check for shutdown signal
if(areAllFlagsSet(astPollFd[EVENTFD_IDX].revents, POLLIN))
{
ANT_DEBUG_I("rx thread caught shutdown signal.");
// reset the counter by reading.
uint64_t counter;
read(stRxThreadInfo->iRxShutdownEventFd, &counter, sizeof(counter));
// don't care if read error, going to close the thread anyways.
stRxThreadInfo->ucRunThread = 0;
} else if (astPollFd[EVENTFD_IDX].revents != 0) {
ANT_ERROR("Shutdown event descriptor had unexpected event: %#x. exiting rx thread.",
astPollFd[EVENTFD_IDX].revents);
stRxThreadInfo->ucRunThread = 0;
}
}
}
/* disable ANT radio if not already disabling */
// Try to get stEnabledStatusLock.
// if you get it then no one is enabling or disabling
// if you can't get it assume something made you exit
ANT_DEBUG_V("try getting stEnabledStatusLock in %s", __FUNCTION__);
iMutexLockResult = pthread_mutex_trylock(stRxThreadInfo->pstEnabledStatusLock);
if (!iMutexLockResult) {
ANT_DEBUG_V("got stEnabledStatusLock in %s", __FUNCTION__);
ANT_WARN("rx thread has unexpectedly crashed, cleaning up");
// spoof our handle as closed so we don't try to join ourselves in disable
stRxThreadInfo->stRxThread = 0;
if (g_fnStateCallback) {
g_fnStateCallback(RADIO_STATUS_DISABLING);
}
ant_disable();
if (g_fnStateCallback) {
g_fnStateCallback(ant_radio_enabled_status());
}
ANT_DEBUG_V("releasing stEnabledStatusLock in %s", __FUNCTION__);
pthread_mutex_unlock(stRxThreadInfo->pstEnabledStatusLock);
ANT_DEBUG_V("released stEnabledStatusLock in %s", __FUNCTION__);
} else if (iMutexLockResult != EBUSY) {
ANT_ERROR("rx thread closing code, trylock on state lock failed: %s",
strerror(iMutexLockResult));
} else {
ANT_DEBUG_V("stEnabledStatusLock busy");
}
out:
ANT_FUNC_END();
#ifdef ANDROID
return NULL;
#endif
}
ANTStatus ant_disable_radio(void)
{
int result;
int lockResult;
ANTStatus ret = ANT_STATUS_FAILED;
ANT_FUNC_START();
ANT_DEBUG_V("getting enableLock in %s", __FUNCTION__);
lockResult = pthread_mutex_lock(&enableLock);
if(lockResult)
{
ANT_ERROR("Disable failed to get enableLock mutex: %s", strerror(lockResult));
return ANT_STATUS_FAILED;
}
ANT_DEBUG_V("got enableLock in %s", __FUNCTION__);
ANT_DEBUG_V("getting txLock in %s", __FUNCTION__);
lockResult = pthread_mutex_lock(&txLock);
if (lockResult)
{
ANT_ERROR("Disable txLock failed: %s", strerror(lockResult));
pthread_mutex_unlock(&enableLock);
return ANT_STATUS_FAILED;
}
ANT_DEBUG_V("got txLock in %s", __FUNCTION__);
#if USE_EXTERNAL_POWER_LIBRARY
if (get_and_set_radio_status() != RADIO_STATUS_DISABLED)
{
ANT_DEBUG_I("radio_status (%d -> %d)", radio_status, RADIO_STATUS_DISABLING);
radio_status = RADIO_STATUS_DISABLING;
if (RxParams.pfStateCallback)
RxParams.pfStateCallback(radio_status);
}
result = ant_disable();
ANT_DEBUG_D("ant_disable() result is %d", result);
#else
radio_status = RADIO_STATUS_DISABLED;
#endif
// If rx thread exists ( != 0)
if (RxParams.thread)
{
ANT_DEBUG_V("quit rx thread, joining");
pthread_join(RxParams.thread, NULL);
RxParams.thread = 0;
ANT_DEBUG_V("joined by rx thread");
}
else
{
ANT_DEBUG_W("rx thread is 0 (not created?)");
}
switch (get_and_set_radio_status())
{
case RADIO_STATUS_DISABLED:
ret = ANT_STATUS_SUCCESS;
break;
case RADIO_STATUS_ENABLED:
ANT_ERROR("SERIOUS: ANT was disabled, rx thread quit, but ANT is enabled");
ret = ANT_STATUS_FAILED;
break;
default:
ret = ANT_STATUS_NOT_DE_INITIALIZED;
break;
}
ANT_DEBUG_V("releasing txLock in %s", __FUNCTION__);
pthread_mutex_unlock(&txLock);
ANT_DEBUG_V("released txLock in %s", __FUNCTION__);
ANT_DEBUG_V("releasing enableLock in %s", __FUNCTION__);
pthread_mutex_unlock(&enableLock);
ANT_DEBUG_V("released enableLock in %s", __FUNCTION__);
ANT_FUNC_END();
return ret;
}
ANTStatus ant_enable_radio(void)
{
int result;
int lockResult;
ANTStatus result_status = ANT_STATUS_FAILED;
ANT_FUNC_START();
ANT_DEBUG_V("getting enableLock in %s", __FUNCTION__);
lockResult = pthread_mutex_lock(&enableLock);
if(lockResult)
{
ANT_ERROR("Enable failed to get enableLock mutex: %s", strerror(lockResult));
return ANT_STATUS_FAILED;
}
ANT_DEBUG_V("got enableLock in %s", __FUNCTION__);
if(RADIO_STATUS_DISABLED == radio_status)
{
radio_status = RADIO_STATUS_ENABLING;
}
ANT_DEBUG_V("getting txLock in %s", __FUNCTION__);
lockResult = pthread_mutex_lock(&txLock);
if (lockResult)
{
ANT_ERROR("Enable txLock failed: %s", strerror(lockResult));
pthread_mutex_unlock(&enableLock);
return ANT_STATUS_FAILED;
}
ANT_DEBUG_V("got txLock in %s", __FUNCTION__);
if (get_and_set_radio_status() != RADIO_STATUS_ENABLED)
{
if (RxParams.thread)
{
ANT_WARN("in enable call: rx thread still exists but radio crashed. trying to recover");
ANT_DEBUG_V("radio crashed, letting rx thread join");
pthread_join(RxParams.thread, NULL);
RxParams.thread = 0;
ANT_DEBUG_V("recovered. joined by rx thread");
}
ANT_DEBUG_I("radio_status (%d -> %d)", radio_status, RADIO_STATUS_ENABLING);
radio_status = RADIO_STATUS_ENABLING;
#if USE_EXTERNAL_POWER_LIBRARY
if (RxParams.pfStateCallback)
RxParams.pfStateCallback(radio_status);
#endif
}
#if USE_EXTERNAL_POWER_LIBRARY
result = ant_enable();
ANT_DEBUG_D("ant_enable() result is %d", result);
#else
result = 0;
#endif
if (result == 0)
{
if (RxParams.thread)
{
result_status = ANT_STATUS_SUCCESS;
radio_status = RADIO_STATUS_ENABLED; // sanity assign, cant be enabling
ANT_DEBUG_D("ANT radio re-enabled");
}
else
{
result = pthread_create(&RxParams.thread, NULL, ANTHCIRxThread, NULL);
if (result)
{
ANT_ERROR("Thread initialization failed: %s", strerror(result));
result_status = ANT_STATUS_FAILED;
}
else
{
result_status = ANT_STATUS_SUCCESS;
#if USE_EXTERNAL_POWER_LIBRARY
if (radio_status == RADIO_STATUS_ENABLING)
{
ANT_DEBUG_I("radio_status (%d -> %d)", radio_status, RADIO_STATUS_ENABLED);
radio_status = RADIO_STATUS_ENABLED;
if (RxParams.pfStateCallback)
RxParams.pfStateCallback(radio_status);
}
else
{
ANT_WARN("radio was already enabled but rx thread was not running");
}
#else
radio_status = RADIO_STATUS_ENABLED;
#endif
}
}
}
else
{
result_status = ANT_STATUS_TRANSPORT_INIT_ERR;
}
if (result_status != ANT_STATUS_SUCCESS) // ant_enable() or rx thread creating failed
{
#if USE_EXTERNAL_POWER_LIBRARY
ant_disable();
#endif
switch (get_and_set_radio_status())
{
case RADIO_STATUS_ENABLED:
ANT_ERROR("SERIOUS: enable failed, but ANT is enabled without a rx thread");
break;
default:
ANT_DEBUG_D("Enable failed, after cleanup chip is not enabled");
break;
}
}
ANT_DEBUG_V("releasing txLock in %s", __FUNCTION__);
pthread_mutex_unlock(&txLock);
ANT_DEBUG_V("released txLock in %s", __FUNCTION__);
ANT_DEBUG_V("releasing enableLock in %s", __FUNCTION__);
pthread_mutex_unlock(&enableLock);
ANT_DEBUG_V("released enableLock in %s", __FUNCTION__);
ANT_FUNC_END();
return result_status;
}
