/*
* ======== main ========
*/
void main(void)
{
WDT_A_hold(WDT_A_BASE); //Stop watchdog timer
// Minimum Vcore setting required for the USB API is PMM_CORE_LEVEL_2
PMM_setVCore(PMM_CORE_LEVEL_2);
USBHAL_initPorts(); // Config GPIOS for low-power (output low)
USBHAL_initClocks(8000000); // Config clocks. MCLK=SMCLK=FLL=8MHz; ACLK=REFO=32kHz
USB_setup(TRUE,TRUE); // Init USB & events; if a host is present, connect
initRTC(); // Start the real-time clock
__enable_interrupt(); // Enable interrupts globally
int prevLeft = getLeft();
int prevRight = getRight();
int left;
int right;
while (1)
{
// Enter LPM0, which keeps the DCO/FLL active but shuts off the
// CPU. For USB, you can't go below LPM0!
__bis_SR_register(LPM0_bits + GIE);
// If USB is present, sent the time to the host. Flag is set every sec
left = getLeft();
right = getRight();
timeStr[0] = '[';
itoa(left, &timeStr[1], 10);
itoa(right, &timeStr[2], 10);
timeStr[3] = ']';
timeStr[4] = '\n';
timeStr[5] = '\0';
//
// if (bSendTimeToHost)
// {
// bSendTimeToHost = FALSE;
// convertTimeBinToASCII(timeStr);
// This function begins the USB send operation, and immediately
// returns, while the sending happens in the background.
// Send timeStr, 9 bytes, to intf #0 (which is enumerated as a
// COM port). 1000 retries. (Retries will be attempted if the
// previous send hasn't completed yet). If the bus isn't present,
// it simply returns and does nothing.
if (USBCDC_sendDataInBackground(timeStr, 6, CDC0_INTFNUM, 1000))
{
_NOP(); // If it fails, it'll end up here. Could happen if
// the cable was detached after the connectionState()
} // check, or if somehow the retries failed
// }
} //while(1)
} //main()
//TI Leaf Board Specific init
void TILEAF_BoardInit(uint32_t clockFreq)
{
//set clock frequency variable '
CLOCKFREQ = clockFreq;
WDT_A_hold(WDT_A_BASE); // Stop watchdog timer
// Minimum Vcore setting required for the USB API is PMM_CORE_LEVEL_2 .
PMM_setVCore(PMM_CORE_LEVEL_2);
USBHAL_initPorts(); // Config GPIOS for low-power (output low)
USBHAL_initClocks(clockFreq); // Config clocks. MCLK=SMCLK=FLL=8MHz; ACLK=REFO=32kHz
USB_setup(TRUE, TRUE); // Init USB & events; if a host is present, connect
__enable_interrupt(); // Enable interrupts globally
}
/*
* ======== main ========
*/
int main (void)
{
WDT_A_hold(WDT_A_BASE); // Stop watchdog timer
// Minumum Vcore setting required for the USB API is PMM_CORE_LEVEL_2 .
PMM_setVCore(PMM_CORE_LEVEL_2);
USBHAL_initPorts(); // Config GPIOS for low-power (output low)
USBHAL_initClocks(MCLK_FREQUENCY); // Config clocks. MCLK=SMCLK=FLL=MCLK_FREQUENCY; ACLK=REFO=32kHz
hal_sd_pwr_on();
initTimer();
USB_setup(FALSE, TRUE); // Init USB & events; if a host is present, connect
__enable_interrupt(); // Enable interrupts globally
// GPS_init();
// state machine
while (1)
{
switch( state )
{
case sIDLE:
hal_led_a(0);
hal_led_b(0);
hal_gps_pwr_off();
hal_sd_pwr_off();
UCS_turnOffXT2();
/* USB connected */
if(USB_getConnectionInformation() & USB_VBUS_PRESENT)
{
hal_led_a(CYAN);
//PMM_setVCore(PMM_CORE_LEVEL_2);
hal_sd_pwr_on();
shortDelay();
USBMSC_initMSC(); // Initialize MSC API, and report media to the host
if (USB_enable() == USB_SUCCEED){
state = sUSB;
hal_led_a(GREEN);
//hal_sd_pwr_on();
//detectCard();
USB_reset();
USB_connect(); //generate rising edge on DP -> the host enumerates our device as full speed device
}
break; // don't enter sleep
}
/* start GPS */
if(hal_button_event())
{
/* delay for starting */
hal_led_a(RED);
uint8_t timeout = 16;
while( hal_button_status() == 1 && --timeout )
{
shortDelay();
}
hal_led_a(0);
if( hal_button_status() == 0 )
break;
state = sGPS;
hal_led_a(CYAN);
hal_sd_pwr_on();
timeout = 8;
while( --timeout )
{
shortDelay();
}
detectCard();
Timer_A_startCounter(TIMER_A0_BASE, TIMER_A_UP_MODE);
gps_start();
hal_button_event();
break; // don't enter sleep
}
USB_disable(); //Disable
hal_gps_rtc_on(); // saves around 7uA
Timer_A_stop(TIMER_A0_BASE);
//UCS_turnOffSMCLK();
//PMM_setVCore(PMM_CORE_LEVEL_0);
__bis_SR_register(LPM4_bits + GIE);
_NOP();
//UCS_turnOnSMCLK();
//PMM_setVCore(PMM_CORE_LEVEL_2);
break;
case sGPS:
/* stop GPS */
if((USB_getConnectionInformation() & USB_VBUS_PRESENT))
{
state = sIDLE;
gps_stop();
break;
}
if(hal_button_event())
{
/* delay for stopping */
uint8_t timeout = 16;
while( hal_button_status() == 1 && --timeout )
{
hal_led_a(RED);
shortDelay();
hal_led_a(RED);
}
hal_led_a(0);
if( hal_button_status() == 0 )
break;
state = sIDLE;
gps_stop();
break;
}
if (bDetectCard){
USBMSC_checkMSCInsertionRemoval();
// Clear the flag, until the next timer ISR
bDetectCard = 0x00;
}
while( gps_check() )
{
gps_do();
}
__bis_SR_register(LPM0_bits + GIE);
_NOP();
break;
case sUSB:
if(!(USB_getConnectionInformation() & USB_VBUS_PRESENT))
{
state = sIDLE;
break;
}
/* check state of chareger? */
if( hal_charge_status())
hal_led_b(RED);
else
hal_led_b(GREEN);
hal_button_event(); // clear button event
switch (USB_getConnectionState())
{
case ST_ENUM_ACTIVE:
USBMSC_processMSCBuffer(); // Handle READ/WRITE cmds from the host
// Every second, the Timer_A ISR sets this flag. The
// checking can't be done from within the timer ISR, because it
// enables interrupts, and this is not a recommended
// practice due to the risk of nested interrupts.
if (bDetectCard){
USBMSC_checkMSCInsertionRemoval();
// Clear the flag, until the next timer ISR
bDetectCard = 0x00;
}
break;
// These cases are executed while your device is disconnected from
// the host (meaning, not enumerated); enumerated but suspended
// by the host, or connected to a powered hub without a USB host
// present.
case ST_PHYS_DISCONNECTED:
case ST_ENUM_SUSPENDED:
case ST_PHYS_CONNECTED_NOENUM_SUSP:
hal_led_a(BLUE);
//state = sIDLE;
break;
// The default is executed for the momentary state
// ST_ENUM_IN_PROGRESS. Usually, this state only last a few
// seconds. Be sure not to enter LPM3 in this state; USB
// communication is taking place here, and therefore the mode must
// be LPM0 or active-CPU.
case ST_ENUM_IN_PROGRESS:
default:;
}
break;
}
}
}
