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samd support suspend and resume. Though cannot distinguish between Suspend and Disconnect

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should work with #47
This commit is contained in:
hathach
2019-04-02 01:52:12 +07:00
parent 491b5936d5
commit dd9c441a61
3 changed files with 104 additions and 48 deletions
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81
src/portable/microchip/samd21/dcd_samd21.c
View File

@@ -38,19 +38,20 @@ static ATTR_ALIGNED(4) UsbDeviceDescBank sram_registers[8][2];
static ATTR_ALIGNED(4) uint8_t _setup_packet[8];
// Setup the control endpoint 0.
static void bus_reset(void) {
// Max size of packets is 64 bytes.
UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT];
bank_out->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN];
bank_in->PCKSIZE.bit.SIZE = 0x3;
static void bus_reset(void)
{
// Max size of packets is 64 bytes.
UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT];
bank_out->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN];
bank_in->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0];
ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1);
ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP;
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0];
ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1);
ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP;
// Prepare for setup packet
dcd_edpt_xfer(0, 0, _setup_packet, sizeof(_setup_packet));
// Prepare for setup packet
dcd_edpt_xfer(0, 0, _setup_packet, sizeof(_setup_packet));
}
@@ -79,6 +80,7 @@ void dcd_init (uint8_t rhport)
USB->DEVICE.CTRLA.reg = USB_CTRLA_MODE_DEVICE | USB_CTRLA_ENABLE | USB_CTRLA_RUNSTDBY;
while (USB->DEVICE.SYNCBUSY.bit.ENABLE == 1) {}
USB->DEVICE.INTFLAG.reg |= USB->DEVICE.INTFLAG.reg; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST;
}
@@ -103,6 +105,10 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
while (USB->DEVICE.DeviceEndpoint[0].EPSTATUS.bit.BK1RDY == 1) {}
USB->DEVICE.DADD.reg = USB_DEVICE_DADD_DADD(dev_addr) | USB_DEVICE_DADD_ADDEN;
// Enable SUSPEND interrupt since the bus signal D+/D- are stable now.
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_SUSPEND; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SUSPEND;
}
void dcd_set_config (uint8_t rhport, uint8_t config_num)
@@ -111,17 +117,13 @@ void dcd_set_config (uint8_t rhport, uint8_t config_num)
(void) config_num;
// Nothing to do
#if 0
// Enable suspend to detect disconnection
// TODO need to distinguish Suspend vs Disconnect
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_SUSPEND;
USB->DEVICE.INTENSET.reg |= USB_DEVICE_INTENSET_SUSPEND;
#endif
}
void dcd_remote_wakeup(uint8_t rhport)
{
(void) rhport;
USB->DEVICE.CTRLB.bit.UPRSM = 1;
}
/*------------------------------------------------------------------*/
@@ -305,35 +307,44 @@ void maybe_transfer_complete(void) {
void USB_Handler(void)
{
uint32_t int_status = USB->DEVICE.INTFLAG.reg & USB->DEVICE.INTENSET.reg;
USB->DEVICE.INTFLAG.reg = int_status; // clear interrupt
/*------------- Interrupt Processing -------------*/
if ( int_status & USB_DEVICE_INTFLAG_EORST )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_EORST;
bus_reset();
dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
}
if ( int_status & USB_DEVICE_INTFLAG_SOF )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SOF;
dcd_event_bus_signal(0, DCD_EVENT_SOF, true);
}
#if 0
// SAMD doesn't distinguish between Suspend and Disconnect state.
// Both condition will cause SUSPEND interrupt triggered.
// To prevent being triggered when D+/D- are not stable, SUSPEND interrupt is only
// enabled when we received SET_ADDRESS request and cleared on Bus Reset
if ( int_status & USB_DEVICE_INTFLAG_SUSPEND )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SUSPEND;
// Enable wakeup interrupt
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_WAKEUP; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTFLAG_WAKEUP;
// disable interrupt to prevent it continue to trigger
USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTENCLR_SUSPEND;
// TODO need to distinguish Suspend vs Disconnect
// reset address to 0, force host to re-enumerate after resume
USB->DEVICE.DADD.reg = 0;
dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, true);
dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
}
// Wakeup interrupt is only enabled when we got suspended.
// Wakeup interrupt will disable itself
if ( int_status & USB_DEVICE_INTFLAG_WAKEUP )
{
// disable wakeup interrupt itself
USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP;
dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
}
if ( int_status & USB_DEVICE_INTFLAG_EORST )
{
// Disable both suspend and wakeup interrupt
USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP | USB_DEVICE_INTFLAG_SUSPEND;
bus_reset();
dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
}
#endif
// Setup packet received.
maybe_handle_setup_packet();

66
src/portable/microchip/samd51/dcd_samd51.c
View File

@@ -38,19 +38,20 @@ static UsbDeviceDescBank sram_registers[8][2];
static ATTR_ALIGNED(4) uint8_t _setup_packet[8];
// Setup the control endpoint 0.
static void bus_reset(void) {
// Max size of packets is 64 bytes.
UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT];
bank_out->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN];
bank_in->PCKSIZE.bit.SIZE = 0x3;
static void bus_reset(void)
{
// Max size of packets is 64 bytes.
UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT];
bank_out->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN];
bank_in->PCKSIZE.bit.SIZE = 0x3;
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0];
ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1);
ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP;
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0];
ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1);
ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP;
// Prepare for setup packet
dcd_edpt_xfer(0, 0, _setup_packet, sizeof(_setup_packet));
// Prepare for setup packet
dcd_edpt_xfer(0, 0, _setup_packet, sizeof(_setup_packet));
}
@@ -78,6 +79,8 @@ void dcd_init (uint8_t rhport)
USB->DEVICE.CTRLB.reg = USB_DEVICE_CTRLB_SPDCONF_FS;
USB->DEVICE.CTRLA.reg = USB_CTRLA_MODE_DEVICE | USB_CTRLA_ENABLE | USB_CTRLA_RUNSTDBY;
while (USB->DEVICE.SYNCBUSY.bit.ENABLE == 1) {}
USB->DEVICE.INTFLAG.reg |= USB->DEVICE.INTFLAG.reg; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST;
}
@@ -108,6 +111,10 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
while (USB->DEVICE.DeviceEndpoint[0].EPSTATUS.bit.BK1RDY == 1) {}
USB->DEVICE.DADD.reg = USB_DEVICE_DADD_DADD(dev_addr) | USB_DEVICE_DADD_ADDEN;
// Enable SUSPEND interrupt since the bus signal D+/D- are stable now.
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_SUSPEND; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SUSPEND;
}
void dcd_set_config (uint8_t rhport, uint8_t config_num)
@@ -120,6 +127,8 @@ void dcd_set_config (uint8_t rhport, uint8_t config_num)
void dcd_remote_wakeup(uint8_t rhport)
{
(void) rhport;
USB->DEVICE.CTRLB.bit.UPRSM = 1;
}
/*------------------------------------------------------------------*/
@@ -270,12 +279,42 @@ USB_TRFAIL1_PERR_0, USB_TRFAIL1_PERR_1, USB_TRFAIL1_PERR_2,
USB_TRFAIL1_PERR_3, USB_TRFAIL1_PERR_4, USB_TRFAIL1_PERR_5,
USB_TRFAIL1_PERR_6, USB_TRFAIL1_PERR_7, USB_UPRSM, USB_WAKEUP */
void USB_0_Handler(void) {
uint32_t int_status = USB->DEVICE.INTFLAG.reg;
uint32_t int_status = USB->DEVICE.INTFLAG.reg & USB->DEVICE.INTENSET.reg;
/*------------- Interrupt Processing -------------*/
// SAMD doesn't distinguish between Suspend and Disconnect state.
// Both condition will cause SUSPEND interrupt triggered.
// To prevent being triggered when D+/D- are not stable, SUSPEND interrupt is only
// enabled when we received SET_ADDRESS request and cleared on Bus Reset
if ( int_status & USB_DEVICE_INTFLAG_SUSPEND )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SUSPEND;
// Enable wakeup interrupt
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_WAKEUP; // clear pending
USB->DEVICE.INTENSET.reg = USB_DEVICE_INTFLAG_WAKEUP;
dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
}
// Wakeup interrupt is only enabled when we got suspended.
// Wakeup interrupt will disable itself
if ( int_status & USB_DEVICE_INTFLAG_WAKEUP )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_WAKEUP;
// disable wakeup interrupt itself
USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP;
dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
}
if ( int_status & USB_DEVICE_INTFLAG_EORST )
{
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_EORST;
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_EORST;
// Disable both suspend and wakeup interrupt
USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP | USB_DEVICE_INTFLAG_SUSPEND;
bus_reset();
dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
}
@@ -283,6 +322,7 @@ void USB_0_Handler(void) {
// Setup packet received.
maybe_handle_setup_packet();
}
/* USB_SOF_HSOF */
void USB_1_Handler(void) {
USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SOF;