?? amd.java
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package util;import com.jopdesign.sys.Const;import com.jopdesign.sys.Native;/*** Flash programmer (for AMD Am29LV040).* read and write data to address 0x80000.** timing:* byte program: typ 9 us max. 300 us* sector erase: typ 0.7 s + 0.6 s max 15 s + 20 s** asumes Timer.java is initialized*/public class Amd { public static int read(int addr) { return Native.rdMem(addr+0x80000); } /** program and handle timeout (without wd handling!) */ public static void program(int addr, int data) { int i; addr += 0x80000; Native.wr(0, Const.IO_INT_ENA); Native.wrMem(0xaa, 0x80555); Native.wrMem(0x55, 0x802aa); Native.wrMem(0xa0, 0x80555); Native.wrMem(data, addr); int j = Native.rd(Const.IO_US_CNT); j += 350; // maximum 350 us timeout data &= 0xff; for (;;) { if (Native.rdMem(addr) == data) break; if (j-Native.rd(Const.IO_US_CNT) < 0) break; } Native.wr(1, Const.IO_INT_ENA); } /** * erase one sector and handle wd. */ public static boolean erase(int addr) { int i; addr += 0x80000; Native.wr(0, Const.IO_INT_ENA); Native.wrMem(0xaa, 0x80555); Native.wrMem(0x55, 0x802aa); Native.wrMem(0x80, 0x80555); Native.wrMem(0xaa, 0x80555); Native.wrMem(0x55, 0x802aa); Native.wrMem(0x30, addr); Native.wr(1, Const.IO_INT_ENA); for (i=0; i<400; ++i) { // maximum 40 s timeout joprt.RtThread.sleepMs(100);Dbg.wr('.'); Timer.wd(); if (Native.rdMem(addr) == 0xff) return true; } return false; }}?? 快捷鍵說明
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