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teeny_usb_stm32_otg_host.c
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teeny_usb_stm32_otg_host.c
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/*
* _______ _ _ _____ ____
* |__ __| | | | |/ ____| _ \
* | | ___ ___ _ __ _ _| | | | (___ | |_) |
* | |/ _ \/ _ \ '_ \| | | | | | |\___ \| _ <
* | | __/ __/ | | | |_| | |__| |____) | |_) |
* |_|\___|\___|_| |_|\__, |\____/|_____/|____/
* __/ |
* |___/
*
* TeenyUSB - light weight usb stack for STM32 micro controllers
*
* Copyright (c) 2019 XToolBox - [email protected]
* www.tusb.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "string.h"
#include "teeny_usb.h"
#ifndef NO_HOST
#if defined(USB_OTG_FS) || defined(USB_OTG_HS)
#if DEBUG
void hc_log_begin(tusb_host_t* host, uint8_t hc_num);
void hc_log_data(tusb_host_t* host, uint8_t hc_num, uint32_t data);
void hc_log_end(tusb_host_t* host, uint8_t hc_num);
#define HC_LOG_BEGIN(host, hc) hc_log_begin(host, hc)
#define HC_LOG_DATA(host, hc, info) hc_log_data(host, hc, info)
#define HC_LOG_END(host, hc) hc_log_end(host, hc)
#else
#define HC_LOG_BEGIN(host, hc)
#define HC_LOG_DATA(host, hc, info)
#define HC_LOG_END(host, hc)
#endif
void tusb_otg_driver_vbus (USB_OTG_GlobalTypeDef* USBx, uint8_t state);
uint32_t tusb_otg_host_submit(tusb_host_t* host, uint8_t hc_num);
void tusb_host_deinit_channel(tusb_host_t* host, uint8_t hc_num);
static void tusb_otg_send_data(tusb_host_t* host, uint8_t hc_num);
static void tusb_otg_set_phy_clock(USB_OTG_GlobalTypeDef *USBx , uint8_t freq)
{
//uint32_t USBx_BASE = (uint32_t)USBx;
USBx_HOST->HCFG &= ~(USB_OTG_HCFG_FSLSPCS);
USBx_HOST->HCFG |= (uint32_t)freq & USB_OTG_HCFG_FSLSPCS;
if(freq == HCFG_48_MHZ){
USBx_HOST->HFIR = 48000U;
}else if (freq == HCFG_6_MHZ){
USBx_HOST->HFIR = 6000U;
}
}
static void tusb_otg_stop_host(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t value;
uint32_t i;
/* Disable global int */
USBx->GAHBCFG &= ~USB_OTG_GAHBCFG_GINT;
/* Flush FIFO */
flush_tx(USBx, 0x10U);
flush_rx(USBx);
/* Flush out any leftover queued requests. */
for (i = 0U; i <= 15U; i++)
{
value = USBx_HC(i)->HCCHAR;
value |= USB_OTG_HCCHAR_CHDIS;
value &= ~USB_OTG_HCCHAR_CHENA;
value &= ~USB_OTG_HCCHAR_EPDIR;
USBx_HC(i)->HCCHAR = value;
}
/* Halt all channels to put them into a known state. */
for (i = 0U; i <= 15U; i++)
{
uint32_t count = 0U;
value = USBx_HC(i)->HCCHAR;
value |= USB_OTG_HCCHAR_CHDIS;
value |= USB_OTG_HCCHAR_CHENA;
value &= ~USB_OTG_HCCHAR_EPDIR;
USBx_HC(i)->HCCHAR = value;
do{
if (++count > 1000U) break;
}while ((USBx_HC(i)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
}
/* Clear any pending Host interrupts */
USBx_HOST->HAINT = 0xFFFFFFFFU;
USBx->GINTSTS = 0xFFFFFFFFU;
/* Enable global int */
USBx->GAHBCFG |= USB_OTG_GAHBCFG_GINT;
}
static void tusb_otg_host_disconnect(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
tusb_otg_stop_host(host);
host->state = TUSB_HOST_PORT_DISCONNECTED;
memset(host->hc, 0, sizeof(host->hc));
USBx->GAHBCFG |= USB_OTG_GAHBCFG_GINT;
tusb_otg_driver_vbus(USBx, 1);
tusb_host_port_changed(host, 0, TUSB_HOST_PORT_DISCONNECTED);
}
static void tusb_host_port_handler(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t hprt0 = USBx_HPRT0;
uint32_t hprt0_dup = USBx_HPRT0;
hprt0_dup &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG);
if( hprt0 & USB_OTG_HPRT_PCDET ) {
// Port connect detect
if( hprt0 & USB_OTG_HPRT_PCSTS ){
// A device is attached
USB_MASK_INTERRUPT(USBx, USB_OTG_GINTSTS_DISCINT);
// Post connect message
host->state = TUSB_HOST_PORT_CONNECTED;
tusb_host_port_changed(host, 0, TUSB_HOST_PORT_CONNECTED);
}
// write 1 to clear the PCDET int flag
hprt0_dup |= USB_OTG_HPRT_PCDET;
}
if( hprt0 & USB_OTG_HPRT_PENCHNG ) {
// Port enable changed
if( hprt0 & USB_OTG_HPRT_PENA ){
if(USBx == USB_OTG_FS){
if ((hprt0 & USB_OTG_HPRT_PSPD) == (HPRT0_PRTSPD_LOW_SPEED << 17)){
// Low speed
tusb_otg_set_phy_clock(USBx, HCFG_6_MHZ);
}else{
// Full speed
tusb_otg_set_phy_clock(USBx, HCFG_48_MHZ);
}
}else{
if(USBx == USB_OTG_FS){
// FS phy
USBx_HOST->HFIR = 60000U;
}
}
host->state = TUSB_HOST_PORT_ENABLED;
tusb_host_port_changed(host, 0, TUSB_HOST_PORT_ENABLED);
// Port enabled
}else{
// Port disabled
USBx_HPRT0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
USB_UNMASK_INTERRUPT(USBx, USB_OTG_GINTSTS_DISCINT);
host->state = TUSB_HOST_PORT_DISABLED;
tusb_host_port_changed(host, 0, TUSB_HOST_PORT_DISABLED);
}
hprt0_dup |= USB_OTG_HPRT_PENCHNG;
}
if( hprt0 & USB_OTG_HPRT_POCCHNG )
{
hprt0_dup |= USB_OTG_HPRT_POCCHNG;
}
USBx_HPRT0 = hprt0_dup;
}
void tusb_port_set_reset(tusb_host_t* host, uint8_t port, uint8_t reset)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t hprt0 = USBx_HPRT0;
hprt0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG);
if(reset){
USBx_HPRT0 = (USB_OTG_HPRT_PRST | hprt0);
}else{
USBx_HPRT0 = ((~USB_OTG_HPRT_PRST) & hprt0);
}
}
void tusb_otg_read_data(USB_OTG_GlobalTypeDef *USBx, void* buf, uint32_t len);
// copy data to channel buffer in rx handler
static void tusb_otg_host_rx_handler(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t sts = USBx->GRXSTSP;
uint8_t ch_num = sts & USB_OTG_GRXSTSP_EPNUM;
uint32_t len = (sts & USB_OTG_GRXSTSP_BCNT) >> 4;
if(((sts & USB_OTG_GRXSTSP_PKTSTS) >> 17) == GRXSTS_PKTSTS_IN){
tusb_hc_data_t* hc = &host->hc[ch_num];
if(hc->ch_buf && hc->count < hc->size){
tusb_otg_read_data(USBx, hc->ch_buf + hc->count, len);
hc->count += len;
}else{
tusb_otg_read_data(USBx, 0, len);
}
if( USBx_HC(ch_num)->HCTSIZ & USB_OTG_HCTSIZ_PKTCNT ){
uint32_t tmpreg = USBx_HC(ch_num)->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
USBx_HC(ch_num)->HCCHAR = tmpreg;
hc->toggle_in ^= 1;
}
}
}
// this function directly fork from the HAL
static void tusb_otg_halt_channel(USB_OTG_GlobalTypeDef *USBx, uint8_t hc_num)
{
uint32_t HcEpType = (USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> 18;
uint32_t tx_q_space = 0;
uint32_t dir = USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_EPDIR;
/* Check for space in the request queue to issue the halt. */
if ((HcEpType == HCCHAR_CTRL) || (HcEpType == HCCHAR_BULK)) {
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS;
tx_q_space = USBx->HNPTXSTS & (0xFFU << 16);
}else{
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS;
tx_q_space = USBx_HOST->HPTXSTS & (0xFFU << 16);
}
if(tx_q_space == 0){
uint32_t count = 0U;
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA;
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR;
do {
if (++count > 1000U) {
break;
}
} while ((USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
}else{
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
}
USBx_HC(hc_num)->HCCHAR |= dir;
/*
if ((HcEpType == HCCHAR_CTRL) || (HcEpType == HCCHAR_BULK)) {
if ((USBx->HNPTXSTS & (0xFFU << 16)) == 0U) {
uint32_t count = 0U;
USBx_HC(hcnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA;
USBx_HC(hcnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
USBx_HC(hcnum)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR;
do {
if (++count > 1000U) {
break;
}
} while ((USBx_HC(hcnum)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
}else{
USBx_HC(hcnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
}
}else{
USBx_HC(hcnum)->HCCHAR |= USB_OTG_HCCHAR_CHDIS;
if ((USBx_HOST->HPTXSTS & (0xFFU << 16)) == 0U){
uint32_t count = 0U;
USBx_HC(hcnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA;
USBx_HC(hcnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
USBx_HC(hcnum)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR;
do{
if (++count > 1000U){
break;
}
}while ((USBx_HC(hcnum)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
}else{
USBx_HC(hcnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
}
}
*/
}
#define MASK_HALT() do{ HC->HCINTMSK &= ~USB_OTG_HCINTMSK_CHHM; }while(0)
#define UNMASK_HALT() do{ HC->HCINTMSK |= USB_OTG_HCINTMSK_CHHM; }while(0)
#define CLEAR_INT(interrupt) do{ HC->HCINT = (interrupt); }while(0)
#ifndef __HAL_HCD_CLEAR_HC_INT
#define __HAL_HCD_CLEAR_HC_INT(ch, interrupt)\
do{ USBx_HC(ch)->HCINT = (interrupt); }while(0)
#endif
#ifndef __HAL_HCD_UNMASK_HALT_HC_INT
#define __HAL_HCD_UNMASK_HALT_HC_INT(ch) \
do{ USBx_HC(ch)->HCINTMSK |= USB_OTG_HCINTMSK_CHHM; }while(0)
#endif
#ifndef __HAL_HCD_MASK_HALT_HC_INT
#define __HAL_HCD_MASK_HALT_HC_INT(ch) \
do{ USBx_HC(ch)->HCINTMSK &= ~USB_OTG_HCINTMSK_CHHM; }while(0)
#endif
static void tusb_otg_in_channel_handler(tusb_host_t* host, uint8_t ch_num)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(ch_num);
tusb_hc_data_t* hc = &host->hc[ch_num];
uint32_t tmpreg;
if ((HC->HCINT & USB_OTG_HCINT_AHBERR) == USB_OTG_HCINT_AHBERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_AHB_ERROR);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_AHBERR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
}
else if( (HC->HCINT & USB_OTG_HCINT_BBERR) == USB_OTG_HCINT_BBERR )
{
HC_LOG_DATA(host, ch_num, TUSB_CS_BABBLE_ERROR);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_BBERR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
}
else if ((HC->HCINT & USB_OTG_HCINT_ACK) == USB_OTG_HCINT_ACK)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_ACK);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_ACK);
}
else if ((HC->HCINT & USB_OTG_HCINT_STALL) == USB_OTG_HCINT_STALL)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_STALL);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
hc->state = TUSB_CS_STALL;
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_STALL);
tusb_otg_halt_channel(USBx, ch_num);
}
else if ((HC->HCINT & USB_OTG_HCINT_DTERR) == USB_OTG_HCINT_DTERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_DT_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
hc->state = TUSB_CS_DT_ERROR;
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_DTERR);
}
else
{
/* ... */
}
if ((HC->HCINT & USB_OTG_HCINT_FRMOR) == USB_OTG_HCINT_FRMOR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_FRAMEOVERRUN_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_FRMOR);
}
else if ((HC->HCINT & USB_OTG_HCINT_XFRC) == USB_OTG_HCINT_XFRC)
{
uint32_t HcEpType = (HC->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> 18;
(void)HcEpType;
HC_LOG_DATA(host, ch_num, TUSB_CS_TRANSFER_COMPLETE);
if (USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN){
uint32_t mps = HC->HCCHAR & USB_OTG_HCCHAR_MPSIZ;
uint32_t pkt_cnt = (hc->size + mps - 1) / mps;
uint32_t remain = (HC->HCTSIZ & USB_OTG_HCTSIZ_XFRSIZ);
hc->count = mps*pkt_cnt - remain;
}
hc->state = TUSB_CS_TRANSFER_COMPLETE;
hc->error_count = 0U;
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_XFRC);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
hc->toggle_in ^= 1U;
}
else if ((HC->HCINT & USB_OTG_HCINT_CHH) == USB_OTG_HCINT_CHH)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_XFER_ONGOING);
__HAL_HCD_MASK_HALT_HC_INT(ch_num);
if(hc->is_cancel){
hc->xfer_done = 1;
hc->is_cancel = 0;
hc->state = TUSB_CS_XFER_CANCEL;
}else if(hc->state == TUSB_CS_TRANSFER_COMPLETE)
{
hc->xfer_done = 1;
}
else if (hc->state == TUSB_CS_STALL)
{
hc->xfer_done = 1;
}
else if(hc->state == TUSB_CS_TRANSACTION_ERROR)
{
hc->error_count++;
if(hc->error_count > MAX_ERROR_RETRY_TIME){
hc->xfer_done = 1;
}else{
/* re-activate the channel */
tmpreg = HC->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
HC->HCCHAR = tmpreg;
}
}
else if (hc->state == TUSB_CS_DT_ERROR)
{
hc->xfer_done = 1;
}
else if (hc->state == TUSB_CS_NAK)
{
/* re-activate the channel */
hc->nak_count++;
hc->error_count = 0;
if(hc->nak_count > MAX_NAK_RETRY_TIME){
hc->xfer_done = 1;
}else{
if (USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN){
tmpreg = HC->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
HC->HCCHAR = tmpreg;
}else{
//tusb_otg_host_submit(host, ch_num);
tmpreg = HC->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
HC->HCCHAR = tmpreg;
}
}
}
else
{
/* ... */
}
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_CHH);
tusb_on_channel_event(host, ch_num);
}
else if ((HC->HCINT & USB_OTG_HCINT_TXERR) == USB_OTG_HCINT_TXERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_TRANSACTION_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
hc->state = TUSB_CS_TRANSACTION_ERROR;
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_TXERR);
}
else if ((HC->HCINT & USB_OTG_HCINT_NAK) == USB_OTG_HCINT_NAK)
{
uint32_t HcEpType = (HC->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> 18;
HC_LOG_DATA(host, ch_num, TUSB_CS_NAK);
if(HcEpType == HCCHAR_INTR)
{
hc->xfer_done = 1;
hc->state = TUSB_CS_INT_NAK;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
else if ((HcEpType == HCCHAR_CTRL)||
(HcEpType == HCCHAR_BULK))
{
hc->error_count = 0U;
if ( (USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN) == 0)
{
hc->state = TUSB_CS_NAK;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
}
else
{
/* ... */
}
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
}
else
{
HC_LOG_DATA(host, ch_num, TUSB_CS_UNKNOWN_ERROR);
/* ... */
}
}
static void tusb_otg_out_channel_handler(tusb_host_t* host, uint8_t ch_num)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(ch_num);
tusb_hc_data_t* hc = &host->hc[ch_num];
uint32_t tmpreg;
if ((HC->HCINT & USB_OTG_HCINT_AHBERR) == USB_OTG_HCINT_AHBERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_AHB_ERROR);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_AHBERR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
}
else if ((HC->HCINT & USB_OTG_HCINT_ACK) == USB_OTG_HCINT_ACK)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_ACK);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_ACK);
if( hc->do_ping == 1U)
{
hc->state = TUSB_CS_ACK;
hc->do_ping = 0U;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
}
else if ((HC->HCINT & USB_OTG_HCINT_NYET) == USB_OTG_HCINT_NYET)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_NYET);
hc->state = TUSB_CS_NYET;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NYET);
}
else if ((HC->HCINT & USB_OTG_HCINT_FRMOR) == USB_OTG_HCINT_FRMOR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_FRAMEOVERRUN_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_FRMOR);
}
else if ((HC->HCINT & USB_OTG_HCINT_XFRC) == USB_OTG_HCINT_XFRC)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_TRANSFER_COMPLETE);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_XFRC);
hc->state = TUSB_CS_TRANSFER_COMPLETE;
}
else if ((HC->HCINT & USB_OTG_HCINT_STALL) == USB_OTG_HCINT_STALL)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_STALL);
hc->state = TUSB_CS_STALL;
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_STALL);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
else if ((HC->HCINT & USB_OTG_HCINT_NAK) == USB_OTG_HCINT_NAK)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_NAK);
hc->error_count = 0U;
hc->state = TUSB_CS_NAK;
if (hc->do_ping == 0){
if (hc->speed == PORT_SPEED_HIGH){
if (!(USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN)){
hc->do_ping = 1;
}
}
}
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
}
else if ((HC->HCINT & USB_OTG_HCINT_TXERR) == USB_OTG_HCINT_TXERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_TRANSACTION_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
hc->state = TUSB_CS_TRANSACTION_ERROR;
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_TXERR);
}
else if ((HC->HCINT & USB_OTG_HCINT_DTERR) == USB_OTG_HCINT_DTERR)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_DT_ERROR);
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_NAK);
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_DTERR);
hc->state = TUSB_CS_DT_ERROR;
}
else if ((HC->HCINT & USB_OTG_HCINT_CHH) == USB_OTG_HCINT_CHH)
{
HC_LOG_DATA(host, ch_num, TUSB_CS_XFER_ONGOING);
__HAL_HCD_MASK_HALT_HC_INT(ch_num);
if(hc->is_cancel){
hc->xfer_done = 1;
hc->state = TUSB_CS_XFER_CANCEL;
}else if (hc->state == TUSB_CS_XFER_ONGOING){
hc->state = TUSB_CS_INIT;
tusb_otg_host_submit(host, ch_num);
}else if (hc->state == TUSB_CS_TRANSFER_COMPLETE){
uint32_t HcEpType = (HC->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> USB_OTG_HCCHAR_EPTYP_Pos;
uint32_t len = (HC->HCTSIZ & USB_OTG_HCTSIZ_XFRSIZ) >> USB_OTG_HCTSIZ_XFRSIZ_Pos;
if(HcEpType == HCCHAR_BULK){
hc->toggle_out ^= 1U;
}
hc->error_count = 0;
hc->nak_count = 0;
hc->count = hc->count + len;
if(hc->count>= hc->size){
hc->xfer_done = 1;
}else{
hc->state = TUSB_CS_XFER_ONGOING;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
//tusb_otg_host_submit(host, ch_num);
}
}
else if (hc->state == TUSB_CS_NAK)
{
hc->nak_count++;
hc->error_count = 0;
if(hc->nak_count > MAX_NAK_RETRY_TIME){
hc->xfer_done = 1;
}else{
hc->state = TUSB_CS_INIT;
//__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
//tusb_otg_halt_channel(USBx, ch_num);
tusb_otg_host_submit(host, ch_num);
/*
if (USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN){
tmpreg = HC->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
HC->HCCHAR = tmpreg;
}else{
tusb_otg_host_submit(host, ch_num);
}
*/
}
}
else if (hc->state == TUSB_CS_ACK)
{
if(hc->do_ping){
hc->do_ping = 0;
hc->state = TUSB_CS_XFER_ONGOING;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
}
else if (hc->state == TUSB_CS_NYET)
{
// not yet, do ping
hc->do_ping = 1;
hc->state = TUSB_CS_XFER_ONGOING;
__HAL_HCD_UNMASK_HALT_HC_INT(ch_num);
tusb_otg_halt_channel(USBx, ch_num);
}
else if (hc->state == TUSB_CS_STALL)
{
hc->xfer_done = 1;
}
else if (hc->state == TUSB_CS_TRANSACTION_ERROR)
{
hc->error_count++;
if(hc->error_count > MAX_ERROR_RETRY_TIME){
hc->xfer_done = 1;
}else{
/* re-activate the channel */
tmpreg = HC->HCCHAR;
tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
tmpreg |= USB_OTG_HCCHAR_CHENA;
HC->HCCHAR = tmpreg;
}
}
else if (hc->state == TUSB_CS_DT_ERROR)
{
hc->xfer_done = 1;
}
else
{
/* ... */
}
__HAL_HCD_CLEAR_HC_INT(ch_num, USB_OTG_HCINT_CHH);
tusb_on_channel_event(host, ch_num);
}
else
{
/* ... */
HC_LOG_DATA(host, ch_num, TUSB_CS_UNKNOWN_ERROR);
}
}
#define INTR() (USBx->GINTSTS & USBx->GINTMSK)
// Interrupt handler of HOST mode
void tusb_otg_host_handler(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t MAX_CH_NUM = USBx == USB_OTG_FS ? USB_OTG_FS_MAX_CH_NUM : USB_OTG_HS_MAX_CH_NUM;
if(INTR() == 0){
return;
}
if( INTR() & USB_OTG_GINTSTS_PXFR_INCOMPISOOUT ){
USBx->GINTSTS = USB_OTG_GINTSTS_PXFR_INCOMPISOOUT;
}
if(INTR() & USB_OTG_GINTSTS_IISOIXFR){
USBx->GINTSTS = USB_OTG_GINTSTS_IISOIXFR;
}
if(INTR() & USB_OTG_GINTSTS_PTXFE){
uint32_t mask = host->ptx_pending;
uint8_t ch_num = 0;
USBx->GINTSTS = USB_OTG_GINTSTS_PTXFE;
while(mask){
if(mask & 1){
tusb_otg_send_data(host, ch_num);
break;
}
ch_num++;
mask>>=1;
}
if(!host->ptx_pending){
USBx->GINTMSK &= ~USB_OTG_GINTMSK_PTXFEM;
}
}
if(INTR() & USB_OTG_GINTSTS_NPTXFE){
uint32_t mask = host->nptx_pending;
uint8_t ch_num = 0;
USBx->GINTSTS = USB_OTG_GINTSTS_NPTXFE;
while(mask){
if(mask & 1){
tusb_otg_send_data(host, ch_num);
break;
}
ch_num++;
mask>>=1;
}
if(!host->nptx_pending){
USBx->GINTMSK &= ~USB_OTG_GINTMSK_NPTXFEM;
}
}
if(INTR() & USB_OTG_GINTSTS_MMIS){
USBx->GINTSTS = USB_OTG_GINTSTS_MMIS;
}
/* Handle Host Disconnect Interrupts */
if(INTR() &USB_OTG_GINTSTS_DISCINT){
/* Cleanup HPRT */
USBx_HPRT0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
/* Handle Host Port Interrupts */
tusb_otg_host_disconnect(host);
tusb_otg_set_phy_clock(USBx, HCFG_48_MHZ);
USBx->GINTSTS = USB_OTG_GINTSTS_DISCINT;
}
/* Handle Host Port Interrupts */
if( INTR() & USB_OTG_GINTSTS_HPRTINT ){
tusb_host_port_handler(host);
}
/* Handle Host SOF Interrupts */
if( INTR() & USB_OTG_GINTSTS_SOF ){
USBx->GINTSTS = USB_OTG_GINTSTS_SOF;
tusb_host_sof_event(host);
}
/* Handle Host channel Interrupts */
if( INTR() & USB_OTG_GINTSTS_HCINT ){
uint32_t hc_intr = (USBx_HOST->HAINT) & 0xFFFFU;
uint32_t hc_num = 0;
while(hc_intr){
if(hc_intr & 1){
if( USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_EPDIR ){
tusb_otg_in_channel_handler(host, hc_num);
}else{
tusb_otg_out_channel_handler(host, hc_num);
}
//tusb_otg_host_channel_handler(host, hc_num);
}
hc_num++;
hc_intr>>=1;
if(hc_num>MAX_CH_NUM) break;
}
USBx->GINTSTS = USB_OTG_GINTSTS_HCINT;
}
/* Handle Rx Queue Level Interrupts */
if( INTR() & USB_OTG_GINTSTS_RXFLVL ){
USB_MASK_INTERRUPT(USBx, USB_OTG_GINTSTS_RXFLVL);
tusb_otg_host_rx_handler(host);
USB_UNMASK_INTERRUPT(USBx, USB_OTG_GINTSTS_RXFLVL);
}
}
void tusb_host_init_channel(tusb_host_t* host, uint8_t hc_num, uint8_t dev_addr, uint8_t ep_addr, uint8_t ep_type, uint16_t mps, uint8_t speed)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(hc_num);
tusb_hc_data_t* hc = &host->hc[hc_num];
// clear old interrupt flags
HC->HCINT = 0xFFFFFFFFU;
switch(ep_type){
case EP_TYPE_CTRL:
case EP_TYPE_BULK:
HC->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |
USB_OTG_HCINTMSK_STALLM |
USB_OTG_HCINTMSK_TXERRM |
USB_OTG_HCINTMSK_DTERRM |
USB_OTG_HCINTMSK_AHBERR |
USB_OTG_HCINTMSK_NAKM;
if (ep_addr & 0x80){
HC->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM;
}else{
if(USBx != USB_OTG_FS){
HC->HCINTMSK |= (USB_OTG_HCINTMSK_NYET | USB_OTG_HCINTMSK_ACKM);
}
}
break;
case EP_TYPE_INTR:
HC->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |
USB_OTG_HCINTMSK_STALLM |
USB_OTG_HCINTMSK_TXERRM |
USB_OTG_HCINTMSK_DTERRM |
USB_OTG_HCINTMSK_NAKM |
USB_OTG_HCINTMSK_AHBERR |
USB_OTG_HCINTMSK_FRMORM;
if (ep_addr & 0x80){
HC->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM;
}
break;
case EP_TYPE_ISOC:
HC->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |
USB_OTG_HCINTMSK_ACKM |
USB_OTG_HCINTMSK_AHBERR |
USB_OTG_HCINTMSK_FRMORM;
if ( ep_addr & 0x80U ){
HC->HCINTMSK |= (USB_OTG_HCINTMSK_TXERRM | USB_OTG_HCINTMSK_BBERRM);
}
break;
}
USBx_HOST->HAINTMSK |= 1UL << (hc_num & 0xFU);
/* Make sure host channel interrupts are enabled. */
USBx->GINTMSK |= USB_OTG_GINTMSK_HCIM;
HC->HCCHAR = ( ((uint32_t)dev_addr << USB_OTG_HCCHAR_DAD_Pos ) |
((uint32_t)(ep_addr&0x7f) << USB_OTG_HCCHAR_EPNUM_Pos ) |
((uint32_t)ep_type << USB_OTG_HCCHAR_EPTYP_Pos ) |
((uint32_t)mps & USB_OTG_HCCHAR_MPSIZ) );
if(ep_addr & 0x80){
HC->HCCHAR |= USB_OTG_HCCHAR_EPDIR;
}
if( speed == PORT_SPEED_LOW){
HC->HCCHAR |= USB_OTG_HCCHAR_LSDEV;
}
if (ep_type == EP_TYPE_INTR){
HC->HCCHAR |= USB_OTG_HCCHAR_ODDFRM ;
}
memset(hc, 0, sizeof(*hc));
hc->speed = speed;
hc->is_use = 1;
}
uint8_t tusb_port_get_speed(tusb_host_t* host, uint8_t port)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
return (USBx_HPRT0 & USB_OTG_HPRT_PSPD)>>USB_OTG_HPRT_PSPD_Pos;
}
void tusb_host_deinit_channel(tusb_host_t* host, uint8_t hc_num)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(hc_num);
tusb_hc_data_t* hc = &host->hc[hc_num];
// close all interrupt mask
HC->HCINTMSK = 0;
HC->HCCHAR = 0;
memset(hc, 0, sizeof(*hc));
}
uint8_t tusb_otg_host_get_free_ch(tusb_host_t* host)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
uint32_t MAX_CH_NUM = USBx == USB_OTG_FS ? USB_OTG_FS_MAX_CH_NUM : USB_OTG_HS_MAX_CH_NUM;
uint32_t i;
for(i=0;i<MAX_CH_NUM;i++){
if(!host->hc[i].is_use){
if( (USBx_HC(i)->HCCHAR & USB_OTG_HCCHAR_CHENA) == 0 ) {
return i;
}
}
}
return 0xff;
}
static void tusb_otg_send_data(tusb_host_t* host, uint8_t hc_num)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(hc_num);
uint32_t mps = HC->HCCHAR & USB_OTG_HCCHAR_MPSIZ;
uint8_t xfer_type = ((HC->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> USB_OTG_HCCHAR_EPTYP_Pos);
tusb_hc_data_t* hc = &host->hc[hc_num];
uint32_t i;
uint32_t act_len;
uint32_t req_size;
uint32_t *pSrc = (uint32_t *)(hc->ch_buf + hc->count);
uint32_t len = (HC->HCTSIZ & USB_OTG_HCTSIZ_XFRSIZ) >> USB_OTG_HCTSIZ_XFRSIZ_Pos;
// len = (len+3)/4;
if(xfer_type == EP_TYPE_CTRL || xfer_type == EP_TYPE_BULK){
act_len = USBx->HNPTXSTS;
}else{
act_len = USBx_HOST->HPTXSTS;
}
// calculate useful FIFO size, depend on two factor
// 1. remain [request queue space] * [max packet size]
req_size = ((act_len & 0xff0000) >> 16) * mps;
// 2. remain FIFO buffer size, round to max packet size boundary
act_len = ( (act_len & 0xffff) *4 / mps ) * mps;
if(act_len > req_size) act_len = req_size;
if(len > act_len){
len = len - act_len;
}else{
act_len = len;
len = 0;
}
act_len = (act_len+3)/4;
for(i=0;i<act_len;i++){
USBx_DFIFO((uint32_t)hc_num) = *((uint32_t *)pSrc);
pSrc++;
}
if(len){
if(xfer_type == EP_TYPE_CTRL || xfer_type == EP_TYPE_BULK){
USBx->GINTMSK |= USB_OTG_GINTMSK_NPTXFEM;
host->nptx_pending |= (1<<hc_num);
}else{
USBx->GINTMSK |= USB_OTG_GINTMSK_PTXFEM;
host->ptx_pending |= (1<<hc_num);
}
}else{
host->nptx_pending &= ~(1<<hc_num);
host->ptx_pending &= ~(1<<hc_num);
}
}
uint32_t tusb_otg_host_submit(tusb_host_t* host, uint8_t hc_num)
{
USB_OTG_GlobalTypeDef *USBx = GetUSB(host);
USB_OTG_HostChannelTypeDef* HC = USBx_HC(hc_num);
tusb_hc_data_t* hc = &host->hc[hc_num];
uint32_t mps = HC->HCCHAR & USB_OTG_HCCHAR_MPSIZ;
uint32_t pkt_cnt;
uint32_t len = hc->size - hc->count;
uint32_t data_pid = HC_PID_DATA1;
uint8_t is_in = (HC->HCCHAR & USB_OTG_HCCHAR_EPDIR) != 0;
#if defined(USB_OTG_HS)
uint8_t is_dma = (USBx == USB_OTG_HS) && ((USBx->GAHBCFG & USB_OTG_GAHBCFG_DMAEN) != 0);
#else
uint8_t is_dma = 0;
#endif
uint8_t is_data = hc->is_data;
uint8_t xfer_type = ((HC->HCCHAR & USB_OTG_HCCHAR_EPTYP) >> USB_OTG_HCCHAR_EPTYP_Pos);
pkt_cnt = (len + mps - 1) / mps;
if(!pkt_cnt) pkt_cnt = 1;
if(is_in){
len = pkt_cnt * mps;
}else{
if(!is_dma){
if(len>mps){
len = mps;
pkt_cnt = 1;
}
}
}
len = (len & USB_OTG_HCTSIZ_XFRSIZ_Msk);
switch( xfer_type ){
case EP_TYPE_CTRL:
if(is_data){
if(len == 0){
if(is_in){
// control in
}else{
// control out
hc->toggle_out = 1;
data_pid = HC_PID_DATA1;
}
}
}else{
// otherwise setup packet
data_pid = HC_PID_SETUP;
}
break;
case EP_TYPE_BULK:
case EP_TYPE_INTR: