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Adding proper remote wake-up support

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- Maintains a sleep state variable (may be able to use as a signal in the future)
- On the first keypress, hold the RESUME signal for 10 ms (spec says between 1 and 15 ms)
- Removed some messages that were affecting sleep state
This commit is contained in:
Jacob Alexander 2016-05-17 01:18:14 -07:00
parent 8fbc8d535f
commit ba58010a75
5 changed files with 39 additions and 2 deletions
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30
Output/pjrcUSB/arm/usb_dev.c
View File

@ -171,6 +171,8 @@ static uint8_t reply_buffer[8];
static uint8_t power_neg_delay;
static uint32_t power_neg_time;
static uint8_t usb_dev_sleep = 0;
// ----- Functions -----
@ -977,6 +979,16 @@ void usb_rx_memory( usb_packet_t *packet )
void usb_tx( uint32_t endpoint, usb_packet_t *packet )
{
// If we have been sleeping, try to wake up host
if ( usb_dev_sleep )
{
// Force wake-up for 10 ms
// According to the USB Spec a device must hold resume for at least 1 ms but no more than 15 ms
USB0_CTL |= USB_CTL_RESUME;
delay(10);
USB0_CTL &= ~(USB_CTL_RESUME);
}
// Since we are transmitting data, USB will be brought out of sleep/suspend
// if it's in that state
// Use the currently set descriptor value
@ -1257,6 +1269,7 @@ restart:
USB_INTEN_STALLEN |
USB_INTEN_ERROREN |
USB_INTEN_USBRSTEN |
USB_INTEN_RESUMEEN |
USB_INTEN_SLEEPEN;
// is this necessary?
@ -1285,9 +1298,19 @@ restart:
// The USB Module triggers this interrupt when it detects the bus has been idle for 3 ms
if ( (status & USB_ISTAT_SLEEP /* 10 */ ) )
{
info_print("Host has requested USB sleep/suspend state");
//info_print("Host has requested USB sleep/suspend state");
Output_update_usb_current( 100 ); // Set to 100 mA
USB0_ISTAT = USB_ISTAT_SLEEP;
usb_dev_sleep = 1;
USB0_ISTAT |= USB_ISTAT_SLEEP;
}
// On USB Resume, unset the usb_dev_sleep so we don't keep sending resume signals
if ( (status & USB_ISTAT_RESUME /* 20 */ ) )
{
//info_print("Host has woken-up/resumed from sleep/suspend state");
Output_update_usb_current( *usb_bMaxPower * 2 );
usb_dev_sleep = 0;
USB0_ISTAT |= USB_ISTAT_RESUME;
}
}
@ -1346,6 +1369,9 @@ uint8_t usb_init()
// Do not check for power negotiation delay until Get Configuration Descriptor
power_neg_delay = 0;
// During initialization host isn't sleeping
usb_dev_sleep = 0;
return 1;
}

1
Output/pjrcUSB/arm/usb_keyboard.c
View File

@ -127,6 +127,7 @@ void usb_keyboard_send()
{
transmit_previous_timeout = 1;
warn_print("USB Transmit Timeout...");
USBKeys_Changed = USBKeyChangeState_None; // Indicate packet lost
return;
}
yield();

6
Output/pjrcUSB/arm/usb_mouse.c
View File

@ -163,6 +163,12 @@ void usb_mouse_send()
{
transmit_previous_timeout = 1;
warn_print("USB Transmit Timeout...");
// Clear status and state
USBMouse_Buttons = 0;
USBMouse_Relative_x = 0;
USBMouse_Relative_y = 0;
USBMouse_Changed = 0;
return;
}
yield();

2
Output/pjrcUSB/output_com.c
View File

@ -713,10 +713,12 @@ void Output_update_usb_current( unsigned int current )
// Update USB current
Output_USBCurrent_Available = current;
/* XXX Affects sleep states due to USB messages
unsigned int total_current = Output_current_available();
info_msg("USB Available Current Changed. Total Available: ");
printInt32( total_current );
print(" mA" NL);
*/
// Send new total current to the Scan Modules
Scan_currentChange( Output_current_available() );

2
Output/usbMuxUart/output_com.c
View File

@ -734,10 +734,12 @@ void Output_update_usb_current( unsigned int current )
// Update USB current
Output_USBCurrent_Available = current;
/* XXX Affects sleep states due to USB messages
unsigned int total_current = Output_current_available();
info_msg("USB Available Current Changed. Total Available: ");
printInt32( total_current );
print(" mA" NL);
*/
// Send new total current to the Scan Modules
Scan_currentChange( Output_current_available() );