mirror of
https://github.com/eddyem/stm32samples.git
synced 2026-02-28 11:54:30 +03:00
change USB for common files
This commit is contained in:
Edward Emelianov
@@ -1,6 +1,6 @@
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/*
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* This file is part of the F1_testbrd project.
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* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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* Copyright 2023 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -17,19 +17,20 @@
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*/
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#include <stdint.h>
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#include "usb.h"
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#include "usb_lib.h"
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#include "usbhw.h"
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ep_t endpoints[STM32ENDPOINTS];
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usb_dev_t USB_Dev;
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static uint16_t USB_Addr = 0;
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static usb_LineCoding lineCoding = {115200, 0, 0, 8};
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static config_pack_t setup_packet;
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static uint8_t ep0databuf[EP0DATABUF_SIZE];
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static uint8_t ep0dbuflen = 0;
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uint8_t ep0databuf[EP0DATABUF_SIZE], setupdatabuf[EP0DATABUF_SIZE];
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static config_pack_t *setup_packet = (config_pack_t*) setupdatabuf;
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usb_LineCoding getLineCoding(){return lineCoding;}
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uint8_t usbON = 0; // device disconnected from terminal
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volatile uint8_t usbON = 0; // device disconnected from terminal
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// definition of parts common for USB_DeviceDescriptor & USB_DeviceQualifierDescriptor
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#define bcdUSB_L 0x10
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@@ -54,9 +55,9 @@ static const uint8_t USB_DeviceDescriptor[] = {
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0x23, // idProduct_H
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0x00, // bcdDevice_Ver_L
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0x03, // bcdDevice_Ver_H
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0x01, // iManufacturer
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0x02, // iProduct
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0x00, // iSerialNumber
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iMANUFACTURER_DESCR, // iManufacturer
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iPRODUCT_DESCR, // iProduct
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iSERIAL_DESCR, // iSerialNumber
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bNumConfigurations // bNumConfigurations
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};
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@@ -96,7 +97,7 @@ static const uint8_t USB_ConfigDescriptor[] = {
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0xff, /* bInterfaceClass */
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0x00, /* bInterfaceSubClass */
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0x00, /* bInterfaceProtocol */
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0x00, /* iInterface: */
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iINTERFACE_DESCR, /* iInterface: */
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///////////////////////////////////////////////////
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/*Endpoint 1 Descriptor*/
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0x07, /* bLength: Endpoint Descriptor size */
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@@ -126,11 +127,19 @@ static const uint8_t USB_ConfigDescriptor[] = {
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0x00, /* bInterval: ignore for Bulk transfer */
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};
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_USB_LANG_ID_(USB_StringLangDescriptor, LANG_US);
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// these descriptors are not used in PL2303 emulator!
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_USB_STRING_(USB_StringSerialDescriptor, u"0");
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_USB_STRING_(USB_StringManufacturingDescriptor, u"Prolific Technology Inc.");
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_USB_STRING_(USB_StringProdDescriptor, u"USB-Serial Controller");
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_USB_LANG_ID_(LD, LANG_US);
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_USB_STRING_(SD, u"0.0.1");
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_USB_STRING_(MD, u"Prolific Technology Inc.");
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_USB_STRING_(PD, u"USB-Serial Controller");
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_USB_STRING_(ID, u"pl2303_emulator");
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static void const *StringDescriptor[iDESCR_AMOUNT] = {
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[iLANGUAGE_DESCR] = &LD,
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[iMANUFACTURER_DESCR] = &MD,
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[iPRODUCT_DESCR] = &PD,
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[iSERIAL_DESCR] = &SD,
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[iINTERFACE_DESCR] = &ID
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};
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/*
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* default handlers
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@@ -149,8 +158,8 @@ void WEAK break_handler(){
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// handler of vendor requests
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void WEAK vendor_handler(config_pack_t *packet){
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uint16_t c;
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if(packet->bmRequestType & 0x80){ // read
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uint8_t c;
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switch(packet->wValue){
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case 0x8484:
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c = 2;
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@@ -164,14 +173,15 @@ void WEAK vendor_handler(config_pack_t *packet){
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default:
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c = 0;
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}
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EP_WriteIRQ(0, &c, 1);
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EP_WriteIRQ(0, (uint8_t*)&c, 1);
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}else{ // write ZLP
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EP_WriteIRQ(0, (uint8_t *)0, 0);
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c = 0;
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EP_WriteIRQ(0, (uint8_t *)&c, 0);
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}
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}
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static void wr0(const uint8_t *buf, uint16_t size){
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if(setup_packet.wLength < size) size = setup_packet.wLength; // shortened request
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if(setup_packet->wLength < size) size = setup_packet->wLength; // shortened request
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if(size < endpoints[0].txbufsz){
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EP_WriteIRQ(0, buf, size);
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return;
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@@ -199,24 +209,18 @@ static void wr0(const uint8_t *buf, uint16_t size){
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}
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static inline void get_descriptor(){
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switch(setup_packet.wValue){
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uint8_t descrtype = setup_packet->wValue >> 8,
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descridx = setup_packet->wValue & 0xff;
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switch(descrtype){
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case DEVICE_DESCRIPTOR:
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wr0(USB_DeviceDescriptor, sizeof(USB_DeviceDescriptor));
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break;
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case CONFIGURATION_DESCRIPTOR:
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wr0(USB_ConfigDescriptor, sizeof(USB_ConfigDescriptor));
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break;
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case STRING_LANG_DESCRIPTOR:
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wr0((const uint8_t *)&USB_StringLangDescriptor, STRING_LANG_DESCRIPTOR_SIZE_BYTE);
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break;
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case STRING_MAN_DESCRIPTOR:
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wr0((const uint8_t *)&USB_StringManufacturingDescriptor, USB_StringManufacturingDescriptor.bLength);
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break;
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case STRING_PROD_DESCRIPTOR:
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wr0((const uint8_t *)&USB_StringProdDescriptor, USB_StringProdDescriptor.bLength);
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break;
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case STRING_SN_DESCRIPTOR:
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wr0((const uint8_t *)&USB_StringSerialDescriptor, USB_StringSerialDescriptor.bLength);
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case STRING_DESCRIPTOR:
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if(descridx < iDESCR_AMOUNT) wr0((const uint8_t *)StringDescriptor[descridx], *((uint8_t*)StringDescriptor[descridx]));
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else EP_WriteIRQ(0, (uint8_t*)0, 0);
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break;
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case DEVICE_QUALIFIER_DESCRIPTOR:
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wr0(USB_DeviceQualifierDescriptor, USB_DeviceQualifierDescriptor[0]);
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@@ -226,10 +230,10 @@ static inline void get_descriptor(){
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}
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}
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static uint8_t configuration = 0; // reply for GET_CONFIGURATION (==1 if configured)
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static uint16_t configuration = 0; // reply for GET_CONFIGURATION (==1 if configured)
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static inline void std_d2h_req(){
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uint16_t status = 0; // bus powered
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switch(setup_packet.bRequest){
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switch(setup_packet->bRequest){
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case GET_DESCRIPTOR:
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get_descriptor();
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break;
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@@ -237,23 +241,54 @@ static inline void std_d2h_req(){
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EP_WriteIRQ(0, (uint8_t *)&status, 2); // send status: Bus Powered
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break;
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case GET_CONFIGURATION:
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EP_WriteIRQ(0, &configuration, 1);
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EP_WriteIRQ(0, (uint8_t*)&configuration, 1);
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break;
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default:
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break;
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}
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}
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// interrupt IN handler (never used?)
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static void EP1_Handler(){
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uint16_t epstatus = KEEP_DTOG(USB->EPnR[1]);
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if(RX_FLAG(epstatus)) epstatus = (epstatus & ~USB_EPnR_STAT_TX) ^ USB_EPnR_STAT_RX; // set valid RX
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else epstatus = epstatus & ~(USB_EPnR_STAT_TX|USB_EPnR_STAT_RX);
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// clear CTR
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epstatus = (epstatus & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX));
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USB->EPnR[1] = epstatus;
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}
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// data IN/OUT handlers
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static void transmit_Handler(){ // EP3IN
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uint16_t epstatus = KEEP_DTOG_STAT(USB->EPnR[3]);
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// clear CTR keep DTOGs & STATs
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USB->EPnR[3] = (epstatus & ~(USB_EPnR_CTR_TX)); // clear TX ctr
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send_next();
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}
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static void receive_Handler(){ // EP2OUT
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uint8_t buf[USB_RXBUFSZ];
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uint16_t epstatus = KEEP_DTOG(USB->EPnR[2]);
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uint8_t sz = EP_Read(2, (uint8_t*)buf);
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if(sz){
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if(RB_write((ringbuffer*)&rbin, buf, sz) != sz) bufovrfl = 1;
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}
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// keep stat_tx & set ACK rx, clear RX ctr
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USB->EPnR[2] = (epstatus & ~USB_EPnR_CTR_RX) ^ USB_EPnR_STAT_RX;
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}
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static inline void std_h2d_req(){
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switch(setup_packet.bRequest){
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switch(setup_packet->bRequest){
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case SET_ADDRESS:
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// new address will be assigned later - after acknowlegement or request to host
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USB_Dev.USB_Addr = setup_packet.wValue;
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USB_Addr = setup_packet->wValue;
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break;
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case SET_CONFIGURATION:
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// Now device configured
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USB_Dev.USB_Status = USB_STATE_CONFIGURED;
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configuration = setup_packet.wValue;
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configuration = setup_packet->wValue;
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EP_Init(1, EP_TYPE_INTERRUPT, USB_EP1BUFSZ, 0, EP1_Handler); // IN1 - transmit
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EP_Init(2, EP_TYPE_BULK, 0, USB_RXBUFSZ, receive_Handler); // OUT2 - receive data
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EP_Init(3, EP_TYPE_BULK, USB_TXBUFSZ, 0, transmit_Handler); // IN3 - transmit data
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break;
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default:
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break;
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@@ -269,10 +304,10 @@ bmRequestType: 76543210
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/**
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* Endpoint0 (control) handler
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*/
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static void EP0_Handler(){
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void EP0_Handler(){
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uint16_t epstatus = USB->EPnR[0]; // EP0R on input -> return this value after modifications
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uint8_t reqtype = setup_packet.bmRequestType & 0x7f;
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uint8_t dev2host = (setup_packet.bmRequestType & 0x80) ? 1 : 0;
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uint8_t reqtype = setup_packet->bmRequestType & 0x7f;
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uint8_t dev2host = (setup_packet->bmRequestType & 0x80) ? 1 : 0;
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int rxflag = RX_FLAG(epstatus);
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if(rxflag && SETUP_FLAG(epstatus)){
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switch(reqtype){
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@@ -285,15 +320,15 @@ static void EP0_Handler(){
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}
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break;
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case STANDARD_ENDPOINT_REQUEST_TYPE: // standard endpoint request
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if(setup_packet.bRequest == CLEAR_FEATURE){
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if(setup_packet->bRequest == CLEAR_FEATURE){
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EP_WriteIRQ(0, (uint8_t *)0, 0);
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}
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break;
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case VENDOR_REQUEST_TYPE:
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vendor_handler(&setup_packet);
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vendor_handler(setup_packet);
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break;
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case CONTROL_REQUEST_TYPE:
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switch(setup_packet.bRequest){
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switch(setup_packet->bRequest){
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case GET_LINE_CODING:
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EP_WriteIRQ(0, (uint8_t*)&lineCoding, sizeof(lineCoding));
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break;
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@@ -301,7 +336,7 @@ static void EP0_Handler(){
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break;
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case SET_CONTROL_LINE_STATE:
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usbON = 1;
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clstate_handler(setup_packet.wValue);
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clstate_handler(setup_packet->wValue);
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break;
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case SEND_BREAK:
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usbON = 0;
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@@ -310,23 +345,22 @@ static void EP0_Handler(){
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default:
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break;
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}
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if(setup_packet.bRequest != GET_LINE_CODING) EP_WriteIRQ(0, (uint8_t *)0, 0); // write acknowledgement
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if(setup_packet->bRequest != GET_LINE_CODING) EP_WriteIRQ(0, (uint8_t *)0, 0); // write acknowledgement
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break;
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default:
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EP_WriteIRQ(0, (uint8_t *)0, 0);
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}
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}else if(rxflag){ // got data over EP0 or host acknowlegement
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if(endpoints[0].rx_cnt){
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if(setup_packet.bRequest == SET_LINE_CODING){
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if(setup_packet->bRequest == SET_LINE_CODING){
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linecoding_handler((usb_LineCoding*)ep0databuf);
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}
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}
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} else if(TX_FLAG(epstatus)){ // package transmitted
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// now we can change address after enumeration
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if ((USB->DADDR & USB_DADDR_ADD) != USB_Dev.USB_Addr){
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USB->DADDR = USB_DADDR_EF | USB_Dev.USB_Addr;
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// change state to ADRESSED
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USB_Dev.USB_Status = USB_STATE_ADDRESSED;
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if ((USB->DADDR & USB_DADDR_ADD) != USB_Addr){
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USB->DADDR = USB_DADDR_EF | USB_Addr;
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usbON = 0;
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}
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}
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epstatus = KEEP_DTOG(USB->EPnR[0]);
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@@ -336,95 +370,6 @@ static void EP0_Handler(){
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USB->EPnR[0] = (epstatus & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_RX;
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}
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static uint16_t lastaddr = LASTADDR_DEFAULT;
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/**
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* Endpoint initialisation
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* @param number - EP num (0...7)
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* @param type - EP type (EP_TYPE_BULK, EP_TYPE_CONTROL, EP_TYPE_ISO, EP_TYPE_INTERRUPT)
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* @param txsz - transmission buffer size @ USB/CAN buffer
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* @param rxsz - reception buffer size @ USB/CAN buffer
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* @param uint16_t (*func)(ep_t *ep) - EP handler function
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* @return 0 if all OK
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*/
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int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, void (*func)(ep_t ep)){
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if(number >= STM32ENDPOINTS) return 4; // out of configured amount
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if(txsz > USB_BTABLE_SIZE || rxsz > USB_BTABLE_SIZE) return 1; // buffer too large
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if(lastaddr + txsz + rxsz >= USB_BTABLE_SIZE) return 2; // out of btable
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USB->EPnR[number] = (type << 9) | (number & USB_EPnR_EA);
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USB->EPnR[number] ^= USB_EPnR_STAT_RX | USB_EPnR_STAT_TX_1;
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if(rxsz & 1 || rxsz > 512) return 3; // wrong rx buffer size
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uint16_t countrx = 0;
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if(rxsz < 64) countrx = rxsz / 2;
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else{
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if(rxsz & 0x1f) return 3; // should be multiple of 32
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countrx = 31 + rxsz / 32;
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}
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USB_BTABLE->EP[number].USB_ADDR_TX = lastaddr;
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endpoints[number].tx_buf = (uint16_t *)(USB_BTABLE_BASE + lastaddr*2);
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endpoints[number].txbufsz = txsz;
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lastaddr += txsz;
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USB_BTABLE->EP[number].USB_COUNT_TX = 0;
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USB_BTABLE->EP[number].USB_ADDR_RX = lastaddr;
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endpoints[number].rx_buf = (uint16_t *)(USB_BTABLE_BASE + lastaddr*2);
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lastaddr += rxsz;
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USB_BTABLE->EP[number].USB_COUNT_RX = countrx << 10;
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endpoints[number].func = func;
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return 0;
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}
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//extern int8_t dump;
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// standard IRQ handler
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void usb_lp_can_rx0_isr(){
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if(USB->ISTR & USB_ISTR_RESET){
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usbON = 0;
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// Reinit registers
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USB->CNTR = USB_CNTR_RESETM | USB_CNTR_CTRM | USB_CNTR_SUSPM | USB_CNTR_WKUPM;
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USB->ISTR = 0;
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// Endpoint 0 - CONTROL
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// ON USB LS size of EP0 may be 8 bytes, but on FS it should be 64 bytes!
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lastaddr = LASTADDR_DEFAULT;
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// clear address, leave only enable bit
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USB->DADDR = USB_DADDR_EF;
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USB_Dev.USB_Status = USB_STATE_DEFAULT;
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USB->ISTR = ~USB_ISTR_RESET;
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if(EP_Init(0, EP_TYPE_CONTROL, USB_EP0_BUFSZ, USB_EP0_BUFSZ, EP0_Handler)){
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return;
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}
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}
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if(USB->ISTR & USB_ISTR_CTR){
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// EP number
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uint8_t n = USB->ISTR & USB_ISTR_EPID;
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// copy status register
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uint16_t epstatus = USB->EPnR[n];
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// copy received bytes amount
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endpoints[n].rx_cnt = USB_BTABLE->EP[n].USB_COUNT_RX & 0x3FF; // low 10 bits is counter
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// check direction
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if(USB->ISTR & USB_ISTR_DIR){ // OUT interrupt - receive data, CTR_RX==1 (if CTR_TX == 1 - two pending transactions: receive following by transmit)
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if(n == 0){ // control endpoint
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if(epstatus & USB_EPnR_SETUP){ // setup packet -> copy data to conf_pack
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EP_Read(0, (uint16_t*)&setup_packet);
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ep0dbuflen = 0;
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// interrupt handler will be called later
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}else if(epstatus & USB_EPnR_CTR_RX){ // data packet -> push received data to ep0databuf
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ep0dbuflen = endpoints[0].rx_cnt;
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EP_Read(0, (uint16_t*)&ep0databuf);
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}
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}
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}
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// call EP handler
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if(endpoints[n].func) endpoints[n].func(endpoints[n]);
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}
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if(USB->ISTR & USB_ISTR_SUSP){ // suspend -> still no connection, may sleep
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usbON = 0;
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USB->CNTR |= USB_CNTR_FSUSP | USB_CNTR_LP_MODE;
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USB->ISTR = ~USB_ISTR_SUSP;
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}
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if(USB->ISTR & USB_ISTR_WKUP){ // wakeup
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USB->CNTR &= ~(USB_CNTR_FSUSP | USB_CNTR_LP_MODE); // clear suspend flags
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USB->ISTR = ~USB_ISTR_WKUP;
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}
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}
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/**
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* Write data to EP buffer (called from IRQ handler)
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* @param number - EP number
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@@ -432,15 +377,24 @@ void usb_lp_can_rx0_isr(){
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* @param size - its size
|
||||
*/
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void EP_WriteIRQ(uint8_t number, const uint8_t *buf, uint16_t size){
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uint8_t i;
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if(size > endpoints[number].txbufsz) size = endpoints[number].txbufsz;
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||||
uint16_t N2 = (size + 1) >> 1;
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// the buffer is 16-bit, so we should copy data as it would be uint16_t
|
||||
uint16_t *buf16 = (uint16_t *)buf;
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#if defined USB1_16
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// very bad: what if `size` is odd?
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uint32_t *out = (uint32_t *)endpoints[number].tx_buf;
|
||||
for(i = 0; i < N2; ++i, ++out){
|
||||
for(int i = 0; i < N2; ++i, ++out){
|
||||
*out = buf16[i];
|
||||
}
|
||||
#elif defined USB2_16
|
||||
// use memcpy instead?
|
||||
for(int i = 0; i < N2; i++){
|
||||
endpoints[number].tx_buf[i] = buf16[i];
|
||||
}
|
||||
#else
|
||||
#error "Define USB1_16 or USB2_16"
|
||||
#endif
|
||||
USB_BTABLE->EP[number].USB_COUNT_TX = size;
|
||||
}
|
||||
|
||||
@@ -462,16 +416,23 @@ void EP_Write(uint8_t number, const uint8_t *buf, uint16_t size){
|
||||
* @param *buf - user array for data
|
||||
* @return amount of data read
|
||||
*/
|
||||
int EP_Read(uint8_t number, uint16_t *buf){
|
||||
int EP_Read(uint8_t number, uint8_t *buf){
|
||||
int sz = endpoints[number].rx_cnt;
|
||||
if(!sz) return 0;
|
||||
endpoints[number].rx_cnt = 0;
|
||||
#if defined USB1_16
|
||||
int n = (sz + 1) >> 1;
|
||||
uint32_t *in = (uint32_t *)endpoints[number].rx_buf;
|
||||
if(n){
|
||||
for(int i = 0; i < n; ++i, ++in)
|
||||
buf[i] = *(uint16_t*)in;
|
||||
}
|
||||
uint32_t *in = (uint32_t*)endpoints[number].rx_buf;
|
||||
uint16_t *out = (uint16_t*)buf;
|
||||
for(int i = 0; i < n; ++i, ++in)
|
||||
out[i] = *(uint16_t*)in;
|
||||
#elif defined USB2_16
|
||||
// use memcpy instead?
|
||||
for(int i = 0; i < sz; ++i)
|
||||
buf[i] = endpoints[number].rx_buf[i];
|
||||
#else
|
||||
#error "Define USB1_16 or USB2_16"
|
||||
#endif
|
||||
return sz;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user