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
USB con. Nucleo
GND GND
+ PA_12
- PA_11
5V 5V
VIDEO
https://youtu.be/jL24IjT6LnI
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
USBHost/USBHALHost_F401RE.h@0:3dac1f1bc9e0, 2016-04-03 (annotated)
Committer:
beaglescout007
Date:
Sun Apr 03 07:45:29 2016 +0000
Revision:
0:3dac1f1bc9e0
Release
Who changed what in which revision?
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#pragma once
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#include "mbed.h"
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#include "USBHostTypes.h"
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#include "USBEndpoint.h"
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class HC {
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static const uint8_t DIR_IN = 1;
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static const uint8_t DIR_OUT = 0;
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public:
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HC();
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HC(int ch);
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~HC();
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HAL_StatusTypeDef Init(uint8_t epnum, uint8_t dev_address, uint8_t speed, uint8_t ep_type, uint16_t mps);
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HAL_StatusTypeDef SubmitRequest(uint8_t* pbuff, uint16_t length, bool setup = false);
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HCD_URBStateTypeDef GetURBState();
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HCD_HCStateTypeDef GetState();
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uint32_t GetXferCount();
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void SetToggle(uint8_t toggle);
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static uint8_t slot;
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private:
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int _ch;
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uint8_t _ep_addr;
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uint8_t _ep_type;
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};
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class USBHALHost {
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public:
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uint8_t LastStatus;
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uint8_t prev_LastStatus;
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protected:
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USBHALHost();
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void init();
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virtual bool addDevice(USBDeviceConnected* parent, int port, bool lowSpeed) = 0;
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int token_setup(USBEndpoint* ep, SETUP_PACKET* setup, uint16_t wLength = 0);
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int token_iso_in(USBEndpoint* ep, uint8_t* data, int size);
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int multi_token_in(USBEndpoint* ep, uint8_t* data = NULL, size_t total = 0, bool block = true);
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int multi_token_out(USBEndpoint* ep, const uint8_t* data = NULL, size_t total = 0);
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void multi_token_inNB(USBEndpoint* ep, uint8_t* data, int size);
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USB_TYPE multi_token_inNB_result(USBEndpoint* ep);
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void setToggle(USBEndpoint* ep, uint8_t toggle);
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private:
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int token_in(USBEndpoint* ep, uint8_t* data = NULL, int size = 0, int retryLimit = 10);
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int token_out(USBEndpoint* ep, const uint8_t* data = NULL, int size = 0, int retryLimit = 10);
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int token_ctl_in(USBEndpoint* ep, uint8_t* data, int size, int retryLimit);
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int token_int_in(USBEndpoint* ep, uint8_t* data, int size);
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int token_blk_in(USBEndpoint* ep, uint8_t* data, int size, int retryLimit);
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int token_ctl_out(USBEndpoint* ep, const uint8_t* data, int size, int retryLimit);
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int token_int_out(USBEndpoint* ep, const uint8_t* data, int size);
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int token_blk_out(USBEndpoint* ep, const uint8_t* data, int size, int retryLimit);
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bool wait_attach();
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static USBHALHost * instHost;
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};
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