...
// This is pseudocode close to the real one byte[] Command = new byte[64]; byte[] Reply = new byte[64]; Command[0] = (byte) FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND; Command[1] = (byte) 1; //Numeber of SPI commands used by spi_command() : putcSPI(SPI_RDID); Command[2] = (byte) 3; //Number of SPI bytes as reply: mid == 0xEF && did == 0x40 && uid == 0x17 Command[3] = (byte) 0x9F; //(byte)SPI_Commands.CMD_SPI_RDID; // SPI_RDID 0x9F ≡ get ID command Command[4] = (byte)0; Command[5] = (byte)0; Command[6] = (byte)0; /* TE_USB_FX2_SendCommand (Command[0] = (byte) FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND) calls "case CMD_FLASH_WRITE_COMMAND" "case CMD_FLASH_WRITE_COMMAND" calls spi_command(EP1OUTBUF[1], &EP1OUTBUF[3], EP1OUTBUF[2], &EP1INBUF[1]) with EP1OUTBUF[3]= SPI_RDID SPI Flash Command EP1OUTBUF = Command Reply = EP1INBUF */ if (TE_USB_FX2_SendCommand(..., Command, CmdLength, Reply, ReplyLength, 5000) == true) { LogTextLine += "SPI Flash IDCODE " + "uid = 0x" + Reply1[1].ToString("x") + "mid = 0x "+ Reply1[2].ToString("x") + " did = 0x" + Reply1[3].ToString("x") + "\r\n"; } | |
//This is a piece of real code (FW running on USB FX2 microcontroller) https://github.com/Trenz-Electronic/TE-USB-Suite/blob/master/TE_USB_FX2.firmware/te_usb_api.ver.3.2/te_api.c //Lines 207-211 case CMD_FLASH_WRITE_COMMAND: EP1INBUF[0] = 0x55; //void spi_command(BYTE CmdLen, unsigned char *CmdData, BYTE RdLen, unsigned char *RdData) spi_command(EP1OUTBUF[1], &EP1OUTBUF[3], EP1OUTBUF[2], &EP1INBUF[1]); new_data = 1; break; /* Command[0] = CMD_FLASH_WRITE_COMMAND; used by TE_USB_FX2_SendCommand () to call "case CMD_FLASH_WRITE_COMMAND" and then spi_command() EP1OUTBUF[1] = CmdLen = Command[1]= CmdLength = 1; // used by spi_command(), MD_SPI_RDID = 0x9F is a single byte EP1OUTBUF[2] = RdLen = Command[2]= ReplyLength = 3; // used by spi_command(), SPI Flash ID should be 3 byte EP1OUTBUF[3] = Command[3] = CMD_SPI_RDID = 0x9F; //used by spi_command() Reply[0] = EP1INBUF[0] = 0x55; Reply[1] = EP1INBUF[1] = 0xEF; // for example Reply[2] = EP1INBUF[2] = 0x40; // for example Reply[3] = EP1INBUF[3] = 0x17; // for example */ | |
byte[] Command1 = new byte[64];
byte[] Reply1 = new byte[64];
int CmdLength1 = 4;
int ReplyLength1 = 64;
byte[] Command2 = new byte[64];
byte[] Reply2 = new byte[64];
int CmdLength2 = 64;
int ReplyLength2 = 64;
//To use the firmware function spi_command() you need to use a double indirection
Command2[0] = (byte)FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND;
Command2[1] = (byte)0x01;//(byte)FX2_Commands.CMD_SPI_RDID;
Command2[2] = (byte)0x03;
Command2[3] = (byte)0x9F;
//To use the firmware function spi_command() you need to use a double indirection
Command1[0] = Command2[0];
Command1[1] = Command2[1];
Command1[2] = Command2[2];
Command1[3] = Command2[3];
Command1[4] = (byte)0;
Command1[5] = (byte)0;
Command1[6] = (byte)0;
if (TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref Command1, ref CmdLength1, ref Reply1, ref ReplyLength1, 5000) == true)
{
LogTextLine += "SPI Flash IDCODE 0x" + Reply1[1].ToString("x") + " 0x"
+ Reply1[2].ToString("x") + " 0x" + Reply1[3].ToString("x") + "\r\n";
}
else
{
LogTextLine += "SPI Flash IDCODE 0x" + Reply1[1].ToString("x") + " 0x"
+ Reply1[2].ToString("x") + " 0x" + Reply1[3].ToString("x") + "\r\n";
}
-------------------------------------------------
-----------------------
//This is a piece of real code (FW running on USB FX2 microcontroller) https://github.com/Trenz-Electronic/TE-USB-Suite/blob/master/TE_USB_FX2.firmware/te_usb_api.ver.3.2/ |
...
// |
...
Lines 207-211 : TE API Command CMD_FLASH_WRITE_COMMAND =
case CMD_FLASH_WRITE_COMMAND:
EP1INBUF[0] = 0x55;
spi_command(EP1OUTBUF[1], &EP1OUTBUF[3], EP1OUTBUF[2], &EP1INBUF[1]);
new_data = 1;
break;
where
Lines 63-89 void spi_command(BYTE CmdLen, unsigned char *CmdData, BYTE RdLen, unsigned char *RdData) { volatile unsigned char spi_count, rd_buff;// pr_address; OED = 0x73; // 0b01110011; FPGA_POWER = 0; //power off fpga FLASH_ENABLE; //assert chip select //Write command spi_count = CmdLen; if (spi_count > 64) spi_count = 64; while (spi_count > 0) { putcSPI(*CmdData); //send read command CmdData++; spi_count = spi_count - 1; } //Read response spi_count = RdLen; if (spi_count > 64) spi_count = 64; while (spi_count > 0) { rd_buff = getcSPI(); *RdData = rd_buff; RdData++; spi_count = spi_count |
...
}
FLASH_DISABLE;
}
However, there is a problem with SPI_RDID command used in process_flash_id() : it requires two "settings" not normally present (FPGA_PROG = 0; and busy_polling();) spi_command () function has a setting not equired (FPGA_POWER=0;) for SPI_RDID used in process_flash_id().
https://github.com/Trenz-Electronic/FX2CDC/blob/master/vcom-cli/te_vcom.c
...
- |
...
if(string_match("flash id",command_buf)){
//FPGA_POWER = 0;
FPGA_PROG = 0; //It is not like spi_command() that use FPGA_POWER = 0;
OED = 0x73; // Configure MOSI, CCLK, CSO_B, PS_ON, PROG as outputs
process_flash_id();
...
1; } |
...
Lines 212 -234
void process_flash_id(void) {
...
char msg[] = "IDCODE ??????";
busy_polling();
FLASH_ |
...
mid = getcSPI();
did = getcSPI();
uid = getcSPI();
...
DISABLE |
...
msg[7] = hex_char_h(mid);
msg[8] = hex_char_l(mid);
msg[9] = hex_char_h(did);
msg[10] = hex_char_l(did);
msg[11] = hex_char_h(uid);
msg[12] = hex_char_l(uid);
//print_ep6_string(msg);
//if((mid == 0xEF) && (did == 0x40) && (uid == 0x17))
// print_ep6_string("W25Q64FV");
//if((mid == 0x20) && (did == 0x20) && (uid == 0x16))
...
; |
...
} |
/* Wait till Flash ready */
void busy_polling (void) {
unsigned char sr = 1;
while ((sr & 0x01) != 0) { // stay in loop until !busy
FLASH_ENABLE; // assert chip select
putcSPI(SPI_RDSR1); // send read status register command
sr = getcSPI(); // read data byte
FLASH_DISABLE; // negate chip select
}
}
In particular, I have tried in two ways with CmdLength = 4 (Command[0] to Command[3]) and ReplyLength = 4; (Reply[0] to Reply[3]).
Command[0] = (byte) FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND;
Command[1] = (byte) 1; //Numeber of SPI commands used by spi_command() : putcSPI(SPI_RDID); // get ID command
Command[2] = (byte) 3; //Number of SPI bytes as reply: mid == 0xEF && did == 0x40 && uid == 0x17
Command[3] = (byte) 0x9F;//(byte)SPI_Commands.CMD_SPI_RDID;
Command[4] = (byte)0;
Command[5] = (byte)0;
Command[6] = (byte)0;
/* The code in green doesn't work because the default of TE_API is CMD_READ_VERSION, so this command is seen as equal to
CMD_READ_VERSION and gives Firmware Version number 3.2.1.1
SEE these lines of code (99-113) at https://github.com/Trenz-Electronic/TE-USB-Suite/blob/master/TE_USB_FX2.firmware/te_usb_api.ver.3.2/te_api.c
//if( !( EP1OUTCS & 0x02) ){ // Got something
// cmd_cnt++;
// for (i = 0; i < 0x40; i++)
// EP1INBUF[i] = 0xFF; // fill output buffer
// switch(EP1OUTBUF[0]){ // Decode command
// //-----------------------------------------------------------------
// default:
// case CMD_READ_VERSION:
// EP1INBUF[0] = fx2_ver_maj_;
// EP1INBUF[1] = fx2_ver_min_;
// EP1INBUF[2] = fx2_tip_maj_;
// EP1INBUF[3] = fx2_tip_min_;
// new_data = 1;
// break;
Command[0] = (byte) 0x9F;//(byte)FX2_Commands.CMD_SPI_RDID;
Command[1] = (byte)0; //(byte)FX2_Parameters.MB_I2C_ADDRESS;
Command[2] = (byte)0; //(byte)FX2_Parameters.I2C_BYTES_SIZE;
Command[3] = (byte)0;
Command[4] = (byte)0;
Command[5] = (byte)0;
Command[6] = (byte)0;
//SPI_RDID 0x9F
*/
if (TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref Command, ref CmdLength, ref Reply, ref ReplyLength, 20000) == false)
LogTextLine += "Doesn't work" + "\r\n";
else {
LogTextLine += "R1 " + Reply[1].ToString("x") + "\r\n";
LogTextLine += "R2 " + Reply[2].ToString("x") + "\r\n";
LogTextLine += "R3 " + Reply[3].ToString("x") + "\r\n";
LogTextLine += "R4 " + Reply[4].ToString("x") + "\r\n";
LogTextLine += "R5 " + Reply[5].ToString("x") + "\r\n";
LogTextLine += "R6 " + Reply[6].ToString("x") + "\r\n";
LogTextLine += "R7 " + Reply[7].ToString("x") + "\r\n";
LogTextLine += "R8 " + Reply[8].ToString("x") + "\r\n";
LogTextLine += "R9 " + Reply[9].ToString("x") + "\r\n"; }
I have also tried using an alternative version of busy_polling() Command[0] = (byte)FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND; Command[1] = (byte)1; Command[2] = (byte)2; Command[3] = (byte)0x05; //Ready? Command[4] = (byte)0; Command[5] = (byte)0; Command[6] = (byte)0; CmdLength = 4; ReplyLength = 2; byte sr = 1; while (sr == 1) { TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref Command, ref CmdLength, ref Reply, ref ReplyLength, 1000); sr = Reply[1]; LogTextLine += "0x55 " + Reply[0].ToString() + "\r\n"; LogTextLine += "SR " + Reply[1].ToString() + "\r\n"; LogTextLine += "0x55 XX " + Reply[0].ToString("x") + "\r\n"; LogTextLine += "SR XX " + Reply[1].ToString("x") + "\r\n"; } if (sr == 0) { CmdLength = 4; ReplyLength = 4; Command[0] = (byte)FX2_Commands.CMD_FX2_FLASH_WRITE_COMMAND; Command[1] = (byte)1; Command[2] = (byte)3; Command[3] = (byte)0x9F; Command[4] = (byte)0; Command[5] = (byte)0; Command[6] = (byte)0; TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref Command, ref CmdLength, ref Reply, ref ReplyLength, 20000); LogTextLine += "R0 " + Reply[0].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA2 " + Reply[1].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA3 " + Reply[2].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA4 " + Reply[3].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA5 " + Reply[4].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA6 " + Reply[5].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA7 " + Reply[6].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA8 " + Reply[7].ToString("x") + "\r\n"; LogTextLine += "FUNZIONA9 " + Reply[8].ToString("x") + "\r\n"; }