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dcd_stm32f4: Add USB init skeleton based on manual (does not enumerate).

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This commit is contained in:
William D. Jones 2019-01-11 19:53:24 -05:00
parent 0f9fa5956f
commit 03cbd406cb
1 changed files with 20 additions and 6 deletions
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26
src/portable/stm/stm32f4/dcd_stm32f4.c
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@ -60,11 +60,25 @@ bool dcd_init (uint8_t rhport)
{ {
(void) rhport; (void) rhport;
// USB->DEVICE.DESCADD.reg = (uint32_t) &sram_registers; // Programming model begins on page 1336 of Rev 17 of reference manual.
// USB->DEVICE.CTRLB.reg = USB_DEVICE_CTRLB_SPDCONF_FS; USB_OTG_FS->GAHBCFG |= USB_OTG_GAHBCFG_TXFELVL | USB_OTG_GAHBCFG_GINT;
// USB->DEVICE.CTRLA.reg = USB_CTRLA_MODE_DEVICE | USB_CTRLA_ENABLE | USB_CTRLA_RUNSTDBY;
// while (USB->DEVICE.SYNCBUSY.bit.ENABLE == 1) {} // No HNP/SRP (no OTG support), program timeout later, turnaround
// USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST; // programmed for 18 MHz.
USB_OTG_FS->GUSBCFG |= (0x0C << USB_OTG_GUSBCFG_TRDT_Pos);
// Required as part of core initialization.
USB_OTG_FS->GINTMSK |= USB_OTG_GINTMSK_OTGINT | USB_OTG_GINTMSK_MMISM;
USB_OTG_DeviceTypeDef * dev = ((USB_OTG_DeviceTypeDef *) (USB_OTG_FS_PERIPH_BASE + USB_OTG_DEVICE_BASE));
// If USB host misbehaves during status portion of control xfer
// (non zero-length packet), send STALL back and discard. Full speed.
dev->DCFG |= USB_OTG_DCFG_NZLSOHSK | (3 << USB_OTG_DCFG_DSPD_Pos);
USB_OTG_FS->GINTMSK |= USB_OTG_GINTMSK_USBRST | USB_OTG_GINTMSK_ENUMDNEM | \
USB_OTG_GINTMSK_ESUSPM | USB_OTG_GINTMSK_USBSUSPM | \
USB_OTG_GINTMSK_SOFM;
USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBUSBSEN; // Enable pullup.
return true; return true;
} }
@ -273,7 +287,7 @@ USB_TRFAIL0_TRFAIL_5, USB_TRFAIL0_TRFAIL_6, USB_TRFAIL0_TRFAIL_7,
USB_TRFAIL1_PERR_0, USB_TRFAIL1_PERR_1, USB_TRFAIL1_PERR_2, 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_3, USB_TRFAIL1_PERR_4, USB_TRFAIL1_PERR_5,
USB_TRFAIL1_PERR_6, USB_TRFAIL1_PERR_7, USB_UPRSM, USB_WAKEUP */ USB_TRFAIL1_PERR_6, USB_TRFAIL1_PERR_7, USB_UPRSM, USB_WAKEUP */
void OTG_FS_Handler(void) { void OTG_FS_IRQHandler(void) {
// uint32_t int_status = USB->DEVICE.INTFLAG.reg; // uint32_t int_status = USB->DEVICE.INTFLAG.reg;
// //
// /*------------- Interrupt Processing -------------*/ // /*------------- Interrupt Processing -------------*/