I have ported my old project “pNesX” game console emulator to the nucleo.
Dependencies: SDFileSystem mbed
Intro
I have ported my old project “pNesX” to the STM32 Nucleo. The pNesX is a NES emulator for the PlayStation that I have created 16 years ago!
Emulation part was almost without change, the sound part was newly added.
Parts
STM32 Nucleo F446RE |
QVGA 2.2 TFT SPI (with the SD card slot) |
Audio jack(TS or TRS) |
USB Connector |
Register 100k, 10k, 4.7k, 100 |
Capacitor 0.01uF, 2.2uF |
Breadboard |
Wires |
Computer Speakers |
USB GamePad |
Wiring diagram
TFT J2 | Nucleo |
---|---|
VCC | 3V3 |
GND | GND |
CS | PB_5(D4) |
Reset | PA_10(D2) Pull Up(100k) |
D/C | PA_8(D7) |
MOSI | PA_7(D11) |
SCK | PA_5(D13) |
LED | LED-100ohm-3V3 |
MISO | PA_6(D12) |
TFT J4 | Nucleo |
---|---|
SD_CS | PA_9 |
SD_MOSI | PB_15 |
SD_MISO | PB_14 |
SD_SCK | PB_13 |
Audio | Nucleo |
---|---|
TIP | PA_4(A2) |
USB con. | Nucleo |
---|---|
GND | GND |
+ | PA_12 |
- | PA_11 |
5V | 5V |
Limitations
- Since the rest of the RAM is about 50kbyte, maximum capacity of the game ROM is about 50kbyte.
- The length of the file name up to 32 characters.
- The number of files in the folder is up to 100.
Used Library
- SDFileSystem by Neil Thiessen
- F401RE-USBHost by Norimasa Okamoto
- USBHostGamepad by Yuuichi Akagawa
USBHost/USBEndpoint.h
- Committer:
- beaglescout007
- Date:
- 2016-04-03
- Revision:
- 0:3dac1f1bc9e0
File content as of revision 0:3dac1f1bc9e0:
/* mbed USBHost Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #pragma once #include "FunctionPointer.h" #include "USBHostTypes.h" #include "USBDeviceConnected.h" class USBDeviceConnected; /** * USBEndpoint class */ class USBEndpoint { public: /** * Constructor */ USBEndpoint(USBDeviceConnected* _dev) { init(CONTROL_ENDPOINT, IN, 8, 0); dev = _dev; pData = NULL; } /** * Initialize an endpoint * * @param type endpoint type * @param dir endpoint direction * @param size endpoint size * @param ep_number endpoint number */ void init(ENDPOINT_TYPE _type, ENDPOINT_DIRECTION _dir, uint32_t size, uint8_t ep_number) { setState(USB_TYPE_FREE); setType(_type); dir = _dir; MaxPacketSize = size; address = ep_number; data01_toggle = DATA0; } void ohci_init(uint8_t frameCount, uint8_t queueLimit) { ohci.frameCount = frameCount; ohci.queueLimit = queueLimit; } /** * Attach a member function to call when a transfer is finished * * @param tptr pointer to the object to call the member function on * @param mptr pointer to the member function to be called */ template<typename T> inline void attach(T* tptr, void (T::*mptr)(void)) { if((mptr != NULL) && (tptr != NULL)) { rx.attach(tptr, mptr); } } /** * Attach a callback called when a transfer is finished * * @param fptr function pointer */ inline void attach(void (*fptr)(void)) { if(fptr != NULL) { rx.attach(fptr); } } /** * Call the handler associted to the end of a transfer */ inline void call() { rx.call(); }; void setType(ENDPOINT_TYPE _type) { type = _type; } void setState(USB_TYPE st) { state = st; } void setDevice(USBDeviceConnected* _dev) { dev = _dev; } void setBuffer(uint8_t* buf, int size) { buf_start = buf, buf_size = size; } void setLengthTransferred(int len) { transferred = len; }; void setAddress(int addr) { address = addr; } void setSize(int size) { MaxPacketSize = size; } void setData01(uint8_t data01) { data01_toggle = data01; } void setNextEndpoint(USBEndpoint* ep) { nextEp = ep; }; template<class T> void setHALData(T data) { pData = data; } USBDeviceConnected* getDevice() { return dev; } ENDPOINT_TYPE getType() { return type; }; USB_TYPE getState() { return state; } int getLengthTransferred() { return transferred; } uint8_t *getBufStart() { return buf_start; } int getBufSize() { return buf_size; } uint8_t getAddress(){ return address; }; int getSize() { return MaxPacketSize; } ENDPOINT_DIRECTION getDir() { return dir; } uint8_t getData01() { return data01_toggle; } void toggleData01() { data01_toggle = (data01_toggle == DATA0) ? DATA1 : DATA0; } USBEndpoint* nextEndpoint() { return nextEp; }; template<class T> T getHALData() { return reinterpret_cast<T>(pData); } struct { uint8_t queueLimit; uint8_t frameCount; // 1-8 } ohci; private: USBEndpoint(){} ENDPOINT_TYPE type; USB_TYPE state; ENDPOINT_DIRECTION dir; USBDeviceConnected* dev; uint8_t data01_toggle; // DATA0,DATA1 uint8_t address; int transferred; uint8_t * buf_start; int buf_size; FunctionPointer rx; int MaxPacketSize; USBEndpoint* nextEp; void* pData; }; class EndpointQueue { public: EndpointQueue():head(NULL),tail(NULL) {} void push(USBEndpoint* ep) { if (head) { tail->setNextEndpoint(ep); } else { head = ep; } tail = ep; ep->setNextEndpoint(NULL); } USBEndpoint* pop() { USBEndpoint* ep = head; if (ep) { head = ep->nextEndpoint(); } return ep; } bool empty() { return head == NULL; } private: USBEndpoint* head; USBEndpoint* tail; };