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implementing dcd_edpt_open

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This commit is contained in:
hathach
2019-12-09 21:36:15 +07:00
parent 988edce745
commit 759fa76280
3 changed files with 334 additions and 10 deletions
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44
src/portable/microchip/samg/dcd_samg.c
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@@ -35,6 +35,8 @@
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
#define EP_COUNT 6
// Transfer descriptor
typedef struct
{
@@ -44,8 +46,8 @@ typedef struct
uint16_t epsize;
} xfer_desc_t;
// Endpoint 0-5 with OUT & IN
xfer_desc_t _dcd_xfer[6][2];
// Endpoint 0-5, each can only be either OUT or In
xfer_desc_t _dcd_xfer[EP_COUNT];
void xfer_begin(xfer_desc_t* xfer, uint8_t * buffer, uint16_t total_bytes)
{
@@ -77,7 +79,7 @@ static void bus_reset(void)
{
tu_memclr(_dcd_xfer, sizeof(_dcd_xfer));
_dcd_xfer[0][0].epsize = _dcd_xfer[0][1].epsize = CFG_TUD_ENDPOINT0_SIZE;
_dcd_xfer[0].epsize = CFG_TUD_ENDPOINT0_SIZE;
// Enable EP0 control
UDP->UDP_CSR[0] = UDP_CSR_EPEDS_Msk;
@@ -163,11 +165,29 @@ void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const * re
}
// Configure endpoint's registers according to descriptor
// SAMG doesnt support using a same endpoint with IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
{
(void) rhport;
(void) ep_desc;
return false;
uint8_t const epnum = tu_edpt_number(ep_desc->bEndpointAddress);
uint8_t const dir = tu_edpt_dir(ep_desc->bEndpointAddress);
// TODO Isochronous is not supported yet
TU_VERIFY(ep_desc->bmAttributes.xfer != TUSB_XFER_ISOCHRONOUS);
TU_VERIFY(epnum < EP_COUNT);
// Must not already enabled
TU_ASSERT((UDP->UDP_CSR[epnum] & UDP_CSR_EPEDS_Msk) == 0);
// Configure type and eanble EP
UDP->UDP_CSR[epnum] = UDP_CSR_EPEDS_Msk | UDP_CSR_EPTYPE(ep_desc->bmAttributes.xfer + 4*dir);
// Enable EP Interrupt
UDP->UDP_IER |= (1 << epnum);
return true;
}
// Submit a transfer, When complete dcd_event_xfer_complete() is invoked to notify the stack
@@ -178,7 +198,7 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
xfer_desc_t* xfer = &_dcd_xfer[epnum][dir];
xfer_desc_t* xfer = &_dcd_xfer[epnum];
xfer_begin(xfer, buffer, total_bytes);
uint16_t const xact_len = xfer_packet_len(xfer);
@@ -217,7 +237,6 @@ void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
(void) rhport;
uint8_t const epnum = tu_edpt_number(ep_addr);
// uint8_t const dir = tu_edpt_dir(ep_addr);
// Set force stall bit
UDP->UDP_CSR[epnum] |= UDP_CSR_FORCESTALL_Msk;
@@ -227,7 +246,11 @@ void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
(void) ep_addr;
uint8_t const epnum = tu_edpt_number(ep_addr);
// clear stall, must also clear data toggle
UDP->UDP_CSR[epnum] &= ~UDP_CSR_FORCESTALL_Msk;
}
//--------------------------------------------------------------------+
@@ -282,12 +305,13 @@ void dcd_isr(uint8_t rhport)
}
}
for(uint8_t epnum = 0; epnum < 6; epnum++)
for(uint8_t epnum = 0; epnum < EP_COUNT; epnum++)
{
xfer_desc_t* xfer = &_dcd_xfer[epnum];
// Endpoint IN
if (UDP->UDP_CSR[epnum] & UDP_CSR_TXCOMP_Msk)
{
xfer_desc_t* xfer = &_dcd_xfer[epnum][1];
uint16_t xact_len = xfer_packet_len(xfer);
xfer_packet_done(xfer);