woodstock .
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
--- /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;
+};
+
+