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
Diff: USBHost/USBDeviceConnected.cpp
- Revision:
- 0:3dac1f1bc9e0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost/USBDeviceConnected.cpp Sun Apr 03 07:45:29 2016 +0000 @@ -0,0 +1,90 @@ +/* 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. + */ + +#include "USBDeviceConnected.h" +#include "dbg.h" + +USBDeviceConnected::USBDeviceConnected() { + init(); +} + +void USBDeviceConnected::init() { + port = 0; + vid = 0; + pid = 0; + nb_interf = 0; + enumerated = false; + device_class = 0; + device_subclass = 0; + proto = 0; + lowSpeed = false; + hub_parent = NULL; +} + +bool USBDeviceConnected::addInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) { + USB_DBG("intf_nb=%d", intf_nb); + if (intf.count(intf_nb) > 0) { + return false; + } + intf[intf_nb] = new INTERFACE(intf_class, intf_subclass, intf_protocol); + return true; +} + +bool USBDeviceConnected::addEndpoint(uint8_t intf_nb, USBEndpoint * ept) { + if (intf.count(intf_nb) > 0) { + intf[intf_nb]->ep.push_back(ept); + return true; + } + return false; +} + +void USBDeviceConnected::init(USBDeviceConnected* parent, uint8_t port_, bool lowSpeed_) { + USB_DBG("init dev: %p", this); + init(); + hub_parent = parent; + port = port_; + lowSpeed = lowSpeed_; +} + +void USBDeviceConnected::disconnect() { + //for(int i = 0; i < MAX_INTF; i++) { + // intf[i].detach.call(); + //} + //init(); +} + + +USBEndpoint * USBDeviceConnected::getEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir, uint8_t index) { + USB_DBG("intf_nb=%d", intf_nb); + USB_TEST_ASSERT(intf.count(intf_nb) > 0); + INTERFACE* inter = intf[intf_nb]; + for (int i = 0; i < inter->ep.size(); i++) { + if ((inter->ep[i]->getType() == type) && (inter->ep[i]->getDir() == dir)) { + if(index) { + index--; + } else { + return inter->ep[i]; + } + } + } + return NULL; +} + +USBEndpoint * USBDeviceConnected::getEndpoint(uint8_t intf_nb, uint8_t index) { + USB_TEST_ASSERT(intf.count(intf_nb) > 0); + return intf[intf_nb]->ep[index]; +} +