USB转SPI芯片操作FLASH--CH347应用
USB转SPI芯片简介
高速USB转接芯片CH347是一款集成480Mbps高速USB接口、JTAG接口、SPI接口、I2C接口、异步UART串口、GPIO接口等多种硬件接口的转换芯片。
接口示意图：
CH347-SPI接口特点
- CH347-SPI接口特点
- USB传输采用USB2.0高速（480Mbps）
- 工作在 Host/Master主机模式；
- 内置硬件DMA，支持批量数据的快速发送和读取；
- 支持SPI模式0/1/2/3，支持传输频率配置，传输频率可达60MHz；
- 硬件信号：SCS0、SCS1、SCK、MISO和MOSI；
- 传输位序：MSB/LSB；
- 数据结构：8位/16位传输；
- 提供计算机端驱动程序和USB转SPI函数库，支持二次开发；
使用芯片准备工作
选择CH347工作模式
CH347芯片在复位时，会根据DTR1（CFG0）和RTS1（CFG1）引脚的电平状态配置其工作模式，各工作模式及功能说明如下
| 工作模式 |
模式说明 |
CFG0 |
CFG1 |
| Mode0 |
480Mbps高速USB转双UART（Baudrate最高9Mbps） |
1 |
1 |
| Mode1 |
480Mbps高速USB转UART+SPI+I2C（厂商驱动模式） |
0 |
1 |
| Mode2 |
480Mbps高速USB转UART+SPI+I2C（系统HID驱动模式） |
1 |
0 |
| Mode3 |
480Mbps高速USB转UART+JTAG（厂商驱动模式） |
0 |
0 |
CH347可使用SPI的模式有两种，其区别在Mode1需要安装厂商驱动，Mode3可以使用系统内置HID驱动无需额外安装，只需在编程时调用CH347动态库进行软件编程即可，此处我们使用Mode1来进行操作。
驱动安装
windows驱动安装
从WCH官网下载CH347转SPI/I2C/JTAG/GPIO驱动：CH341PAR.EXE - 南京沁恒微电子股份有限公司
驱动下载后进行一次安装，后续即可实现系统“免驱”效果无需二次安装。未插入设备时安装会显示“驱动预安装成功”，此时驱动已经正常安装，硬件即插即用。
Windows驱动通过微软数字签名认证，支持32/64位 Windows 11/10/8.1/8/7/VISTA/XP/2000，SERVER 2019/2016/2012/2008/2003等系统，无需担心Windows不同系统兼容性问题。
官方同时提供驱动资源包CH341PAR.ZIP - 南京沁恒微电子股份有限公司，可将驱动安装文件打包至成熟产品一齐发布，且支持无界面安装操作，可通过软件编程调用命令行操作，只需执行“SETUP /S”命令即可静默驱动安装。
点击安装之后，等待弹出安装成功窗口后点击确定即可。
Linux驱动安装
联系WCH技术支持获取到CH347-Linux驱动，然后进行安装
1、执行make编译驱动；
2、执行make load动态加载驱动，或执行make install后可实现重新启动自动检测硬件并加载驱动；
3、插入设备可查看到生成前缀为ch34x_pis的设备节点。
使用USB操作FLASH
本次操作CH347开发板板载FLASH：W25Q16JVSSIQ。
除此之外，CH347也可操作常见AT25/26、GD25等FLASH
调用函数
WCH提供了一套公用的库函数接口，即Windows&Linux平台接口函数名称与参数一致，其库函数接口特性如下：
操作SPI、I2C、GPIO等的接口在任何工作模式下都可使用同一API，在进行软件编写时，只需调用接口完成代码操作逻辑而不用关注当前硬件工作模式。提供插拔检测函数可动态监测设备插拔信息，更方便进行设备管理。
具体详细内容可参考官方开发手册：CH347EVT.ZIP - 南京沁恒微电子股份有限公司 【目录：CH347EVT\EVT\PUB\CH347应用开发手册.PDF】
/***************插拔监测函数************/
BOOL WINAPI CH347SetDeviceNotify( // 设定设备事件通知程序
ULONG iIndex, // 指定设备序号,0对应第一个设备
PCHAR iDeviceID, // 可选参数,指向字符串,指定被监控的设备的ID,字符串以\0终止
mPCH347_NOTIFY_ROUTINE iNotifyRoutine ); // 指定设备事件回调程序,为NULL则取消事件通知,否则在检测到事件时调用该程序
/***************SPI接口函数通用于Mode1/2********************/
// SPI控制器初始化
BOOL WINAPI CH347SPI_Init(ULONG iIndex,mSpiCfgS *SpiCfg);
//获取SPI控制器配置信息
BOOL WINAPI CH347SPI_GetCfg(ULONG iIndex,mSpiCfgS *SpiCfg);
//设置片选状态,使用前需先调用CH347SPI_Init对CS进行设置
BOOL WINAPI CH347SPI_ChangeCS(ULONG iIndex, // 指定设备序号
UCHAR iStatus); // 0=撤消片选,1=设置片选
//设置SPI片选
BOOL WINAPI CH347SPI_SetChipSelect(ULONG iIndex, // 指定设备序号
USHORT iEnableSelect, // 低八位为CS1，高八位为CS2; 字节值为1=设置CS,为0=忽略此CS设置
USHORT iChipSelect, // 低八位为CS1，高八位为CS2;片选输出,0=撤消片选,1=设置片选
ULONG iIsAutoDeativeCS, // 低16位为CS1，高16位为CS2;操作完成后是否自动撤消片选
ULONG iActiveDelay, // 低16位为CS1，高16位为CS2;设置片选后执行读写操作的延时时间,单位us
ULONG iDelayDeactive); // 低16位为CS1，高16位为CS2;撤消片选后执行读写操作的延时时间,单位us
//SPI4写数据
BOOL WINAPI CH347SPI_Write(ULONG iIndex, // 指定设备序号
ULONG iChipSelect, // 片选控制, 位7为0则忽略片选控制, 位7为1进行片选操作
ULONG iLength, // 准备传输的数据字节数
ULONG iWriteStep, // 准备读取的单个块的长度
PVOID ioBuffer); // 指向一个缓冲区,放置准备从MOSI写出的数据
//SPI4读数据.无需先写数据，效率较CH347SPI_WriteRead高很多
BOOL WINAPI CH347SPI_Read(ULONG iIndex, // 指定设备序号
ULONG iChipSelect, // 片选控制, 位7为0则忽略片选控制, 位7为1进行片选操作
ULONG oLength, // 准备发出的字节数
PULONG iLength, // 准备读入的数据字节数
PVOID ioBuffer); // 指向一个缓冲区,放置准备从DOUT写出的数据,返回后是从DIN读入的数据
// 处理SPI数据流,4线接口
BOOL WINAPI CH347SPI_WriteRead(ULONG iIndex, // 指定设备序号
ULONG iChipSelect, // 片选控制, 位7为0则忽略片选控制, 位7为1则操作片选
ULONG iLength, // 准备传输的数据字节数
PVOID ioBuffer ); // 指向一个缓冲区,放置准备从DOUT写出的数据,返回后是从DIN读入的数据
// 处理SPI数据流,4线接口
BOOL WINAPI CH347StreamSPI4(ULONG iIndex, // 指定设备序号
ULONG iChipSelect, // 片选控制, 位7为0则忽略片选控制, 位7为1则参数有效
ULONG iLength, // 准备传输的数据字节数
PVOID ioBuffer ); // 指向一个缓冲区,放置准备从DOUT写出的数据,返回后是从DIN读入的数据操作流程
代码示例
Windows例程
可参考官方开发资料：CH347EVT.ZIP - 南京沁恒微电子股份有限公司 【目录：CH347EVT\EVT\TOOLS\CH347Demo】
界面读写示例如下：
Linux例程
可参考如下代码，链接地址：CH341PAR_LINUX.ZIP - 南京沁恒微电子股份有限公司USB转JTAG/SPI/I2C/并口/GPIO等接口的Linux设备驱动程序，支持CH341的USB转SPI/I2C/EPP并口/MEM并口等，支持CH347的480Mbps高速USB转JTAG/SPI/I2C/GPIO等，支持32/64位操作系统。
https://www.wch.cn/downloads/CH341PAR_LINUX_ZIP.html
/*
* ch347 application demo
*
* Copyright (C) 2023 Nanjing Qinheng Microelectronics Co., Ltd.
* Web: http://wch.cn
* Author: WCH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Cross-compile with cross-gcc -I /path/to/cross-kernel/include
*
* V1.0 - initial version
* V1.1 - add operation for HID mode
* V1.2 - add serial port operation in HID and TTY mode
* V1.3 - update with new library
* V1.4 - add gpio interrupt funciton, update with new library,
* - support more SPI and I2C stretching
* - support I2C clock stretch
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "ch347_lib.h"
#define CMD_FLASH_SECTOR_ERASE 0x20
#define CMD_FLASH_BYTE_PROG 0x02
#define CMD_FLASH_READ 0x03
#define CMD_FLASH_RDSR 0x05
#define CMD_FLASH_WREN 0x06
#define CMD_FLASH_JEDEC_ID 0x9F
#define SPI_FLASH_PerWritePageSize 256
typedef enum _CH347FUNCTYPE {
FUNC_UART = 0,
FUNC_SPI_I2C_GPIO,
FUNC_JTAG_GPIO,
FUNC_SPI_I2C_JTAG_GPIO,
} CH347FUNCTYPE;
struct ch34x {
int fd;
char version[100];
CHIP_TYPE chiptype;
uint32_t dev_id;
CH347FUNCTYPE functype;
};
static struct ch34x ch347device;
bool CH347_SPI_Init()
{
bool ret;
mSpiCfgS SpiCfg = { 0 };
/* set spi interface in [mode3] & [15MHz] & [MSB] & output [0xFF] by default */
SpiCfg.iMode = 3;
SpiCfg.iSpiSpeedHz = 30e6;
SpiCfg.iByteOrder = 1;
SpiCfg.iSpiOutDefaultData = 0xFF;
SpiCfg.iChipSelect = 0x80;
/* init spi interface */
ret = CH347SPI_Init(ch347device.fd, &SpiCfg);
if (!ret) {
printf("Failed to init SPI interface.\n");
return false;
}
return true;
}
bool CH347_I2C_Init()
{
bool ret;
int iMode;
/* set i2c interface in 750KHZ */
iMode = 0x03;
/* init i2c interface */
ret = CH347I2C_Set(ch347device.fd, iMode);
if (!ret) {
printf("Failed to init I2C interface.\n");
return false;
}
return true;
}
bool Flash_ID_Read()
{
int iChipSelect;
int iLength;
uint8_t ioBuffer[4] = { 0 };
uint32_t Flash_ID;
iChipSelect = 0x80;
iLength = 4;
ioBuffer[0] = CMD_FLASH_JEDEC_ID;
memset(ioBuffer + 1, 0xFF, 3);
if (CH347SPI_WriteRead(ch347device.fd, false, iChipSelect, iLength, ioBuffer) == false)
return false;
else {
ioBuffer[0] = 0x00;
memcpy(&Flash_ID, ioBuffer, 4);
}
Flash_ID = htole32(Flash_ID);
printf("Read flash ID: 0x%x.\n", Flash_ID);
if (Flash_ID == 0x000000 || Flash_ID == 0xffffff00) {
printf("Read flash ID error.\n");
return false;
}
return true;
}
unsigned int Flash_Block_Read(unsigned int address, uint8_t *pbuf, unsigned int len)
{
int iChipSelect;
int iLength;
int oLength;
uint8_t ioBuffer[8192] = { 0 };
iChipSelect = 0x80;
iLength = 0x04;
oLength = len;
ioBuffer[0] = CMD_FLASH_READ;
ioBuffer[1] = (uint8_t)(address >> 16);
ioBuffer[2] = (uint8_t)(address >> 8);
ioBuffer[3] = (uint8_t)(address);
if (!CH347SPI_Read(ch347device.fd, false, iChipSelect, iLength, &oLength, ioBuffer)) {
printf("Flash_Block_Read read %d bytes failed.\n", len);
return 0;
} else
memcpy(pbuf, ioBuffer, oLength);
return oLength;
}
bool Flash_Block_Read_Test()
{
double UseT;
uint32_t DataLen, FlashAddr, i;
uint8_t ioBuffer[8192] = { 0 };
char FmtStr1[8 * 1024 * 3 + 16] = "";
static struct timeval t1, t2;
int delta_sec, delta_usec;
FlashAddr = 0x00;
DataLen = 0x500;
gettimeofday(&t1, NULL);
DataLen = Flash_Block_Read(FlashAddr, ioBuffer, DataLen);
if (DataLen <= 0) {
printf("\tFlash Read: Addr[0x%x] read %d bytes failed.\n", FlashAddr, DataLen);
return false;
}
gettimeofday(&t2, NULL);
delta_sec = t2.tv_sec - t1.tv_sec;
delta_usec = t2.tv_usec - t1.tv_usec;
UseT = (float)delta_sec + (float)delta_usec / 1000000;
printf("\tFlash Read: Addr[0x%x] read %d bytes in %.3f seconds.\n", FlashAddr, DataLen, UseT);
for (i = 0; i < DataLen; i++)
sprintf(&FmtStr1[strlen(FmtStr1)], "%02x ", ioBuffer[i]);
printf("\nRead: \n%s\n\n", FmtStr1);
return true;
}
bool Flash_Write_Enable()
{
int iChipSelect;
int iLength;
uint8_t ioBuffer;
iChipSelect = 0x80;
iLength = 1;
ioBuffer = CMD_FLASH_WREN;
return CH347SPI_WriteRead(ch347device.fd, false, iChipSelect, iLength, &ioBuffer);
}
bool Flash_Wait()
{
int iChipSelect;
int iLength;
uint8_t ioBuffer[2];
uint8_t status;
int retry_times = 1000;
iChipSelect = 0x80;
iLength = 2;
do {
ioBuffer[0] = CMD_FLASH_RDSR;
if (CH347SPI_WriteRead(ch347device.fd, false, iChipSelect, iLength, ioBuffer) == false)
return false;
status = ioBuffer[1];
usleep(100);
} while ((status & 0x01) && (retry_times--));
if ((status & 0x01) == 0)
return true;
else
return false;
}
bool Flash_Sector_Erase(uint32_t StartAddr)
{
int iChipSelect;
int iLength;
uint8_t ioBuffer[4];
if (Flash_Write_Enable() == false)
return false;
iChipSelect = 0x80;
iLength = 4;
ioBuffer[0] = CMD_FLASH_SECTOR_ERASE;
ioBuffer[1] = (uint8_t)(StartAddr >> 16 & 0xff);
ioBuffer[2] = (uint8_t)(StartAddr >> 8 & 0xf0);
ioBuffer[3] = 0x00;
if (CH347SPI_WriteRead(ch347device.fd, false, iChipSelect, iLength, ioBuffer) == false)
return false;
if (Flash_Wait() == false)
return false;
return true;
}
bool W25X_Flash_Write_Page(uint8_t *pBuf, uint32_t address, uint32_t len)
{
int iChipSelect;
int iLength;
uint8_t ioBuffer[8192];
if (!Flash_Write_Enable())
return false;
iChipSelect = 0x80;
iLength = len + 4;
ioBuffer[0] = CMD_FLASH_BYTE_PROG;
ioBuffer[1] = (uint8_t)(address >> 16);
ioBuffer[2] = (uint8_t)(address >> 8);
ioBuffer[3] = (uint8_t)address;
memcpy(&ioBuffer[4], pBuf, len);
if (CH347SPI_Write(ch347device.fd, false, iChipSelect, iLength, SPI_FLASH_PerWritePageSize + 4, ioBuffer) ==
false)
return false;
memset(ioBuffer, 0, sizeof(uint8_t) * len);
if (!Flash_Wait())
return false;
return true;
}
bool Flash_Block_Write()
{
int ret;
int i = 0;
uint32_t DataLen, FlashAddr, BeginAddr, NumOfPage, NumOfSingle;
uint8_t ioBuffer[0x500] = { 0 };
uint8_t *pbuf = ioBuffer;
double UseT;
static struct timeval t1, t2;
int delta_sec, delta_usec;
/* write flash from addr 0 */
FlashAddr = 0x00;
BeginAddr = FlashAddr;
DataLen = 0x500;
for (i = 0; i < DataLen; i++)
ioBuffer[i] = i;
NumOfPage = DataLen / SPI_FLASH_PerWritePageSize;
NumOfSingle = DataLen % SPI_FLASH_PerWritePageSize;
/* caculate flash write time */
gettimeofday(&t1, NULL);
while (NumOfPage--) {
ret = W25X_Flash_Write_Page(pbuf, FlashAddr, SPI_FLASH_PerWritePageSize);
if (ret == false)
goto exit;
pbuf += SPI_FLASH_PerWritePageSize;
FlashAddr += SPI_FLASH_PerWritePageSize;
}
if (NumOfSingle) {
ret = W25X_Flash_Write_Page(pbuf, FlashAddr, NumOfSingle);
if (ret == false)
goto exit;
}
gettimeofday(&t2, NULL);
delta_sec = t2.tv_sec - t1.tv_sec;
delta_usec = t2.tv_usec - t1.tv_usec;
UseT = ((float)delta_sec + (float)delta_usec / 1000000);
printf("\tFlash Write: Addr[0x%x] write %d bytes in %.3f seconds.\n", BeginAddr, DataLen, UseT / 1000);
return true;
exit:
printf("\tFlash Write: Addr [0x%x] write %d bytes failed.\n", BeginAddr, DataLen);
return false;
}
bool EEPROM_Read()
{
bool ret = false;
EEPROM_TYPE eeprom;
int iAddr;
int iLength;
int i;
uint8_t oBuffer[256] = { 0 };
eeprom = ID_24C02;
iAddr = 0;
iLength = 256;
ret = CH347ReadEEPROM(ch347device.fd, eeprom, 0, iLength, oBuffer);
if (ret == false)
goto exit;
printf("\nRead EEPROM data:\n");
for (i = 0; i < iLength; i++) {
printf("%02x ", oBuffer[i]);
if (((i + 1) % 10) == 0)
putchar(10);
}
putchar(10);
exit:
return ret;
}
bool EEPROM_Write()
{
bool ret = false;
EEPROM_TYPE eeprom;
int iAddr;
int iLength;
int i;
uint8_t iBuffer[256] = { 0 };
eeprom = ID_24C02;
iAddr = 0;
iLength = 256;
for (i = 0; i < 256; i++)
iBuffer[i] = i;
printf("\nWrite EEPROM data:\n");
ret = CH347WriteEEPROM(ch347device.fd, eeprom, iAddr, iLength, iBuffer);
if (ret == false)
goto exit;
for (i = 0; i < iLength; i++) {
printf("%02x ", iBuffer[i]);
if (((i + 1) % 10) == 0)
putchar(10);
}
putchar(10);
exit:
return ret;
}
void ch34x_demo_flash_operate()
{
bool ret = false;
ret = CH347_SPI_Init();
if (ret == false) {
printf("Failed to init CH347 SPI interface.\n");
return;
}
printf("CH347 SPI interface init succeed.\n");
/* read flash ID */
ret = Flash_ID_Read();
if (!ret) {
printf("Failed to read flash ID.\n");
return;
}
/* read flash block data */
ret = Flash_Block_Read_Test();
if (!ret) {
printf("Failed to read flash.\n");
return;
}
/* erase flash sector data */
ret = Flash_Sector_Erase(0x00);
if (!ret) {
printf("Failed to erase flash.\n");
return;
}
printf("Erase one sector from Addr[0x%x] of flash succeed.\n", 0x00);
/* write flash block data */
ret = Flash_Block_Write();
if (!ret) {
printf("Failed to write flash.\n");
return;
}
/* read flash block data */
ret = Flash_Block_Read_Test();
if (!ret) {
printf("Failed to read flash.\n");
return;
}
}
void ch34x_demo_eeprom_operate()
{
bool ret = false;
ret = CH347_I2C_Init();
if (!ret) {
printf("Failed to init CH347 I2C.\n");
return;
}
printf("CH347 I2C interface init succeed.\n");
ret = EEPROM_Read();
if (!ret) {
printf("Failed to read eeprom.\n");
return;
}
ret = EEPROM_Write();
if (!ret) {
printf("Failed to write eeprom.\n");
return;
}
ret = EEPROM_Read();
if (!ret) {
printf("Failed to read eeprom.\n");
return;
}
}
void ch34x_demo_jtag_operate()
{
int i;
int oReadLength;
uint8_t retue[32] = { 0 };
uint8_t IDCODE[4096] = { 0 };
oReadLength = 32;
/* init jtag tck clock */
CH347Jtag_INIT(ch347device.fd, 4);
/* reset target jtag device */
CH347Jtag_SwitchTapState(ch347device.fd, 0);
/* SHIFT-DR Read the Target IDCODE */
CH347Jtag_ByteReadDR(ch347device.fd, &oReadLength, &retue);
printf("Target IDCODE: \n");
for (i = 0; i < 4; i++) {
printf("0x%2x", retue[3 - i]);
}
puts("");
return;
}
bool CH347_SPI_Slave_Init()
{
bool ret;
mSpiCfgS SpiCfg = { 0 };
/* set spi interface in spi slave mode, [mode3] & [MSB] & output [0xFF] by default */
SpiCfg.iByteOrder = 1;
SpiCfg.iSpiOutDefaultData = 0xFF;
SpiCfg.iMode = 0x83;
/* init spi interface */
ret = CH347SPI_Init(ch347device.fd, &SpiCfg);
if (!ret) {
printf("Failed to init SPI interface.\n");
return false;
} else {
printf("SPI init slave ok.\n");
}
return true;
}
void ch34x_demo_spi_slave_operate(bool enable)
{
bool ret = false;
uint8_t oBuffer[SPI_SLAVE_MAX_LENGTH];
uint32_t oLength;
int i;
if (enable) {
ret = CH347_SPI_Slave_Init();
if (ret == false) {
printf("Failed to init CH347 SPI interface.\n");
return;
}
printf("CH347 SPI interface init succeed.\n");
ret = CH347SPI_Slave_Control(ch347device.fd, true);
if (!ret)
return;
printf("Begin read data in slave mode.\n");
while (1) {
ret = CH347SPI_Slave_QweryData(ch347device.fd, &oLength);
if (!ret) {
printf("CH347SPI_Slave_QweryData failed.\n");
goto exit;
}
if (oLength == 0) {
usleep(10 * 1000);
continue;
}
ret = CH347SPI_Slave_ReadData(ch347device.fd, oBuffer, &oLength);
if (!ret) {
printf("CH347SPI_Slave_ReadData failed.\n");
goto exit;
}
printf("\nRead Slave data, len: %d, contents:\n", oLength);
for (i = 0; i < oLength; i++) {
printf("%02x ", oBuffer[i]);
if (((i + 1) % 20) == 0)
putchar(20);
}
putchar(20);
}
} else
ret = CH347SPI_Slave_Control(ch347device.fd, false);
return;
exit:
CH347SPI_Slave_Control(ch347device.fd, false);
}
static void ch34x_demo_gpio_input_operate()
{
bool ret;
int i, j;
int gpiocount = 8;
uint8_t iDir = 0xff;
uint8_t iData = 0x00;
ret = CH347GPIO_Get(ch347device.fd, &iDir, &iData);
if (ret == false) {
printf("CH347GPIO_Set error.\n");
return;
}
printf("\n********** GPIO Input Start **********\n\n");
for (i = 0; i < gpiocount; i++) {
if ((iData & (1 << i)))
printf("H");
else
printf("L");
}
printf("\n");
printf("\n********** GPIO Input End **********\n\n");
}
static void ch34x_demo_gpio_output_operate()
{
bool ret;
int i, j;
int gpiocount = 8;
uint8_t iEnable = 0xff;
uint8_t iSetDirOut = 0xff;
uint8_t iSetDataOut = 0x00;
/* analog leds here */
CH347GPIO_Set(ch347device.fd, iEnable, iSetDirOut, iSetDataOut);
printf("\n********** GPIO Output Start **********\n");
for (i = 0; i < gpiocount; i++) {
iSetDataOut = 1 << i;
ret = CH347GPIO_Set(ch347device.fd, iEnable, iSetDirOut, iSetDataOut);
if (ret == false) {
printf("CH347GPIO_Set error.\n");
return;
}
printf("\n");
for (j = 0; j < gpiocount; j++) {
if (j == i)
printf("H");
else
printf("L");
}
printf("\n");
usleep(200 * 1000);
}
iSetDataOut = 0x00;
CH347GPIO_Set(ch347device.fd, iEnable, iSetDirOut, iSetDataOut);
printf("\n********** GPIO Output End **********\n\n");
}
static void ch34x_demo_isr_handler(int signo)
{
static int int_times = 0;
printf("ch34x interrupt times: %d\n", int_times++);
}
static void ch34x_demo_irq_operate(bool enable)
{
bool ret;
int gpioindex = 6;
ret = CH347GPIO_IRQ_Set(ch347device.fd, gpioindex, enable, IRQ_TYPE_EDGE_BOTH, ch34x_demo_isr_handler);
if (!ret) {
printf("Failed to set CH347 irq function.");
return;
}
}
void ch34x_demo_uart_operate()
{
bool ret = false;
uint8_t iBuffer[256];
uint8_t oBuffer[256];
uint32_t ioLength;
int i;
ioLength = 256;
for (i = 0; i < 256; i++)
iBuffer[i] = i;
ret = CH347Uart_Init(ch347device.fd, 115200, 3, 0, 0, 1);
if (!ret) {
printf("Failed to init CH347 UART interface.\n");
return;
}
printf("CH347 UART interface init succeed.\n");
ret = CH347Uart_Write(ch347device.fd, iBuffer, &ioLength);
if (ret == false) {
printf("CH347Uart_Write failed.\n");
return;
}
printf("Uart wrote %d bytes already.\n", ioLength);
ret = CH347Uart_Read(ch347device.fd, oBuffer, &ioLength);
if (ret == false) {
printf("CH347Uart_Read failed.\n");
return;
}
printf("\nRead Uart data:\n");
for (i = 0; i < ioLength; i++) {
printf("%02x ", oBuffer[i]);
if (((i + 1) % 10) == 0)
putchar(10);
}
putchar(10);
}
bool Show_DevMsg(char *pathname)
{
unsigned char buf[256];
int ret;
int i;
struct hidraw_devinfo info;
uint16_t vendor, product;
CHIP_TYPE chiptype;
if (strstr(pathname, "tty")) {
printf("Device operating has function [UART].\n");
ch347device.functype = FUNC_UART;
} else if (strstr(pathname, "hidraw")) {
/* Get Raw Name */
ret = ioctl(ch347device.fd, HIDIOCGRAWNAME(256), buf);
if (ret < 0) {
perror("HIDIOCGRAWNAME");
goto exit;
} else
printf("Raw Name: %s\n", buf);
/* Get Raw Info */
ret = ioctl(ch347device.fd, HIDIOCGRAWINFO, &info);
if (ret < 0) {
perror("HIDIOCGRAWINFO");
goto exit;
} else {
printf("Raw Info:\n");
printf("\tvendor: 0x%04hx\n", info.vendor);
printf("\tproduct: 0x%04hx\n", info.product);
}
if (info.vendor == 0x1a86) {
if (info.product == 0x55dc)
ch347device.chiptype = CHIP_CH347T;
else if (info.product == 0x55e5)
ch347device.chiptype = CHIP_CH347F;
else {
printf("Current HID device PID is not CH347.\n");
return -1;
}
} else {
printf("Current HID device VID is not CH347.\n");
return -1;
}
/* Get Physical Location */
ret = ioctl(ch347device.fd, HIDIOCGRAWPHYS(256), buf);
if (ret < 0) {
perror("HIDIOCGRAWPHYS");
goto exit;
} else
printf("Raw Phys: %s\n", buf);
if (ch347device.chiptype == CHIP_CH347T) {
if (strstr(buf, "input0")) {
ch347device.functype = FUNC_UART;
printf("Device operating has function [UART].\n");
} else {
ch347device.functype = FUNC_SPI_I2C_GPIO;
printf("Device operating has function [SPI+I2C+GPIO].\n");
}
} else {
if (strstr(buf, "input0")) {
ch347device.functype = FUNC_UART;
printf("Device operating has function [UART].\n");
} else if (strstr(buf, "input2")) {
ch347device.functype = FUNC_UART;
printf("Device operating has function [UART].\n");
} else {
ch347device.functype = FUNC_SPI_I2C_GPIO;
printf("Device operating has function [SPI+I2C+JTAG+GPIO].\n");
}
}
} else if (strstr(pathname, "ch34x_pis")) {
/* Get Driver Version */
ret = CH34x_GetDriverVersion(ch347device.fd, ch347device.version);
if (ret == false) {
printf("CH34x_GetDriverVersion error.\n");
goto exit;
}
printf("Driver version: %s\n", ch347device.version);
/* Get Chip Type */
ret = CH34x_GetChipType(ch347device.fd, &ch347device.chiptype);
if (ret == false) {
printf("CH34x_GetChipType error.\n");
goto exit;
}
if (ch347device.chiptype == CHIP_CH341) {
printf("Current chip operating is CH341, please use ch341_demo.\n");
goto exit;
}
/* Get Device ID */
ret = CH34X_GetDeviceID(ch347device.fd, &ch347device.dev_id);
if (ret == false) {
printf("CH34X_GetDeviceID error.\n");
goto exit;
}
vendor = ch347device.dev_id;
product = ch347device.dev_id >> 16;
printf("Vendor ID: 0x%4x, Product ID: 0x%4x\n", vendor, product);
if (product == 0x55db) {
ch347device.functype = FUNC_SPI_I2C_GPIO;
printf("Device operating has function [SPI+I2C+GPIO].\n");
} else if (product == 0x55dd) {
ch347device.functype = FUNC_JTAG_GPIO;
printf("Device operating has function [JTAG+GPIO].\n");
} else if (product == 0x55de) {
ch347device.functype = FUNC_SPI_I2C_JTAG_GPIO;
printf("Device operating has function [SPI+I2C+JTAG+GPIO].\n");
}
}
return true;
exit:
return false;
}
int main(int argc, char *argv[])
{
bool ret;
char choice, ch;
if (argc != 2) {
printf("Usage: sudo %s [device]\n", argv[0]);
return -1;
}
/* open device */
ch347device.fd = CH347OpenDevice(argv[1]);
if (ch347device.fd < 0) {
printf("CH347OpenDevice false.\n");
return -1;
}
printf("Open device %s succeed, fd: %d\n", argv[1], ch347device.fd);
ret = Show_DevMsg(argv[1]);
if (ret == false)
return -1;
sleep(1);
if (strstr(argv[1], "ch34x_pis")) {
ret = CH34xSetTimeout(ch347device.fd, 2000, 2000);
if (ret == false) {
printf("CH34xSetTimeout false.\n");
return -1;
}
}
switch (ch347device.functype) {
case FUNC_UART:
while (1) {
printf("\npress u to operate uart, q to quit.\n");
scanf("%c", &choice);
while ((ch = getchar()) != EOF && ch != '\n')
;
if (choice == 'q')
break;
switch (choice) {
case 'u':
ch34x_demo_uart_operate();
break;
default:
break;
}
}
break;
case FUNC_SPI_I2C_GPIO:
case FUNC_SPI_I2C_JTAG_GPIO:
while (1) {
printf("\npress f to operate spi flash, e to operate eeprom,\n"
"a to get gpio status, g to gpio output test, j to operate jtag interface,\n"
"s to enable spi slave mode, o to disable spi slave mode,\n"
"i to enable interrupt, d to disable interrupt, q to quit.\n");
scanf("%c", &choice);
while ((ch = getchar()) != EOF && ch != '\n')
;
if (choice == 'q')
break;
switch (choice) {
case 'f':
printf("FLASH Test begin.\n");
ch34x_demo_flash_operate();
break;
case 'e':
printf("EEPROM Test begin.\n");
ch34x_demo_eeprom_operate();
break;
case 'a':
printf("GPIO Input Test Begin.\n");
ch34x_demo_gpio_input_operate();
break;
case 'g':
printf("GPIO Output Test Begin.\n");
ch34x_demo_gpio_output_operate();
break;
case 'i':
printf("IRQ Test Begin.");
ch34x_demo_irq_operate(true);
break;
case 'd':
printf("IRQ Test Over.\n");
ch34x_demo_irq_operate(false);
break;
case 'j':
if (ch347device.functype == FUNC_SPI_I2C_JTAG_GPIO) {
printf("JTAG Test begin.\n");
ch34x_demo_jtag_operate();
} else {
printf("Chip is not CH347F.\n");
}
break;
case 's':
if (ch347device.chiptype == CHIP_CH347F) {
printf("SPI Slave Test Begin.\n");
ch34x_demo_spi_slave_operate(true);
} else {
printf("Chip is not CH347F.\n");
}
break;
case 'o':
if (ch347device.chiptype == CHIP_CH347F) {
printf("SPI Slave Test Over.\n");
ch34x_demo_spi_slave_operate(false);
} else {
printf("Chip is not CH347F.\n");
}
break;
default:
printf("Bad choice, please input again.\n");
break;
}
}
break;
case FUNC_JTAG_GPIO:
while (1) {
printf("\npress j to operate jtag interface, a to get gpio status,\n"
"g to gpio output test q to quit.\n");
scanf("%c", &choice);
while ((ch = getchar()) != EOF && ch != '\n')
;
if (choice == 'q')
break;
switch (choice) {
case 'j':
printf("JTAG Test begin.\n");
ch34x_demo_jtag_operate();
break;
case 'a':
printf("GPIO Input Test Begin.\n");
ch34x_demo_gpio_input_operate();
break;
case 'g':
printf("GPIO Test begin.\n");
ch34x_demo_gpio_output_operate();
default:
printf("Bad choice, please input again.\n");
break;
}
}
break;
default:
break;
}
/* close the device */
if (CH347CloseDevice(ch347device.fd)) {
printf("Close device succeed.\n");
}
return 0;
}
执行截图：
