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/USBHALHost_F401RE.h
- Revision:
- 0:3dac1f1bc9e0
diff -r 000000000000 -r 3dac1f1bc9e0 USBHost/USBHALHost_F401RE.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost/USBHALHost_F401RE.h Sun Apr 03 07:45:29 2016 +0000 @@ -0,0 +1,59 @@ +#pragma once +#include "mbed.h" +#include "USBHostTypes.h" +#include "USBEndpoint.h" + +class HC { + static const uint8_t DIR_IN = 1; + static const uint8_t DIR_OUT = 0; + +public: + HC(); + HC(int ch); + ~HC(); + HAL_StatusTypeDef Init(uint8_t epnum, uint8_t dev_address, uint8_t speed, uint8_t ep_type, uint16_t mps); + HAL_StatusTypeDef SubmitRequest(uint8_t* pbuff, uint16_t length, bool setup = false); + HCD_URBStateTypeDef GetURBState(); + HCD_HCStateTypeDef GetState(); + uint32_t GetXferCount(); + void SetToggle(uint8_t toggle); + + static uint8_t slot; + +private: + int _ch; + uint8_t _ep_addr; + uint8_t _ep_type; +}; + +class USBHALHost { +public: + uint8_t LastStatus; + uint8_t prev_LastStatus; + +protected: + USBHALHost(); + void init(); + virtual bool addDevice(USBDeviceConnected* parent, int port, bool lowSpeed) = 0; + int token_setup(USBEndpoint* ep, SETUP_PACKET* setup, uint16_t wLength = 0); + int token_iso_in(USBEndpoint* ep, uint8_t* data, int size); + int multi_token_in(USBEndpoint* ep, uint8_t* data = NULL, size_t total = 0, bool block = true); + int multi_token_out(USBEndpoint* ep, const uint8_t* data = NULL, size_t total = 0); + void multi_token_inNB(USBEndpoint* ep, uint8_t* data, int size); + USB_TYPE multi_token_inNB_result(USBEndpoint* ep); + void setToggle(USBEndpoint* ep, uint8_t toggle); + +private: + int token_in(USBEndpoint* ep, uint8_t* data = NULL, int size = 0, int retryLimit = 10); + int token_out(USBEndpoint* ep, const uint8_t* data = NULL, int size = 0, int retryLimit = 10); + int token_ctl_in(USBEndpoint* ep, uint8_t* data, int size, int retryLimit); + int token_int_in(USBEndpoint* ep, uint8_t* data, int size); + int token_blk_in(USBEndpoint* ep, uint8_t* data, int size, int retryLimit); + int token_ctl_out(USBEndpoint* ep, const uint8_t* data, int size, int retryLimit); + int token_int_out(USBEndpoint* ep, const uint8_t* data, int size); + int token_blk_out(USBEndpoint* ep, const uint8_t* data, int size, int retryLimit); + bool wait_attach(); + static USBHALHost * instHost; +}; + +