132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
#include <fx2.h>
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#include <fx2_regs.h>
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#include <fx2_i2c.h>
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#include <fx2_eeprom.h>
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#include <tri.h>
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//#include <lcd\lcd_7565r.h>
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#define DATAINPTR ((BYTE xdata *)&EP1INBUF [8])
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#define DATAOUTPTR ((BYTE xdata *)&EP1OUTBUF[8])
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//extern BYTE fx2_i2c_read( BYTE, BYTE, BYTE xdata *);
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// ================================================================================================
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// EP1
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//
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// Default processing of I2C and EEPROM packets. Inherited EP1 packet handlers normally
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// don't override I2C and EEPROM packet processing. They implement (most of the time) new
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// features, which have simple data transfer only. EP1 is not intented to use for transfering
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// large amount of data, e.g.: jtag, or LA stream.
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//
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// BUF[0] : dir[7] + command[6..0]
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// BUF[1] : address
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// BUF[2] : address ext
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// BUF[3] : subaddress[lo]/eeprom page address[lo]
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// BUF[4] : subaddress[hi]/eeprom page address[lo]
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// BUF[5] : length (max 32)
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// BUF[6] : offset
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// BUF[7] : timeout in ms
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// ================================================================================================
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void tri_ep1out( void)
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{
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bool rd; // true if eeprom/i2c xfer operation is read
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BYTE cmd; // the actual command
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WORD address; // device address + address extension
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WORD subaddr; // sub address for repeated start read
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WORD page; // eeprom page number
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BYTE length; // data length
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BYTE offset; // offset in eeprom page
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BYTE tmo; // timeout
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// ------------------------------------------------------
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// parse command
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// ------------------------------------------------------
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rd = EP1OUTBUF[0] & 0x80;
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cmd = EP1OUTBUF[0] & 0x7F;
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address = *(WORD*)&EP1OUTBUF[1]; // I2C address
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subaddr = *(WORD*)&EP1OUTBUF[3]; // sub address for RS
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page = *(WORD*)&EP1OUTBUF[3]; // page number
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length = *(BYTE*)&EP1OUTBUF[5]; // data length
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offset = *(BYTE*)&EP1OUTBUF[6]; // offset in page
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tmo = *(BYTE*)&EP1OUTBUF[7]; // timeout
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if( length > 132)
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length = 132;
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// ------------------------------------------------------
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// prepare status block
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// ------------------------------------------------------
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EP1INBUF[0] = EP1OUTBUF[0];
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EP1INBUF[1] = EP1OUTBUF[1];
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EP1INBUF[2] = EP1OUTBUF[2];
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EP1INBUF[3] = EP1OUTBUF[3];
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EP1INBUF[4] = EP1OUTBUF[4];
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EP1INBUF[5] = EP1OUTBUF[5];
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EP1INBUF[6] = EP1OUTBUF[6];
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EP1INBUF[7] = I2C_OK;
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if(rd)
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{
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switch(cmd)
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{
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case CMD_IIC_READ:
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EP1INBUF[7] = fx2_i2c_read( address, length, DATAINPTR);
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EP1INBC = 8 +length;
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break;
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case CMD_IIC_READ_RSW:
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EP1INBUF[7] = fx2_i2c_read_rsw( address, subaddr, length, DATAINPTR);
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EP1INBC = 8 +length;
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break;
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/*
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case 1://CMD_EEPROM_BOOT:
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EP1INBUF[7] = FX2_EEPROM_ReadPage0( 0,8, DATAINPTR);
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EP1INBC = 8 +8;
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break;
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case 2://CMD_EEPROM_RAW:
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EP1INBUF[7] = FX2_EEPROM_ReadPage( page, 32, DATAINPTR);
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EP1INBC = 8 +32;
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break;
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*/
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default:
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EP1INBC = 8;
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}
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}
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else
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{
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// *(WORD*)&EP1INBUF[6] = length;
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switch(cmd)
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{
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case CMD_IIC_WRITE:
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EP1INBUF[7] = fx2_i2c_write( address, length, DATAOUTPTR);
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/*
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lcd_gotoxy( 0, 1);
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lcd_putx2(EP1OUTBUF[0]);
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lcd_putx2(EP1OUTBUF[1]);
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lcd_putx2(EP1OUTBUF[2]);
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lcd_putx2(EP1OUTBUF[3]);
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lcd_putx2(EP1OUTBUF[4]);
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lcd_putx2(EP1OUTBUF[5]);
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lcd_putx2(EP1OUTBUF[6]);
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lcd_putx2(EP1OUTBUF[7]);
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*/
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break;
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case 1://CMD_EEPROM_RAW:
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EP1INBUF[7] = FX2_EEPROM_WritePage( page, 32, DATAOUTPTR);
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break;
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}
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EP1INBC = 8;
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}
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EP1OUTBC = 0x40; // re-arm EP1OUT
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}
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