Takanobu Muraguchi
500KB USB mass storage
Dependencies: mbed EEPROM USBDevice
Diff: RawNAND.cpp
- Revision:
- 0:1472308ded03
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/RawNAND.cpp Tue Feb 09 12:00:44 2021 +0000
@@ -0,0 +1,414 @@
+#include "RawNAND.h"
+
+// CEB
+// CLE
+// ALE
+// WEB
+// REB
+// RBB
+// WPB
+// IO1
+// IO2
+// IO3
+// IO4
+// IO5
+// IO6
+// IO7
+// IO8
+
+
+RawNAND::RawNAND(PinName ceb, PinName cle,
+ PinName ale, PinName web,
+ PinName reb, PinName wpb,
+ PinName rbb,
+ PinName io1, PinName io2,
+ PinName io3, PinName io4,
+ PinName io5, PinName io6,
+ PinName io7, PinName io8)
+ : _ceb(ceb,1),_cle(cle,1),
+ _ale(ale,1),_web(web,1),
+ _reb(reb,1),_wpb(wpb,1),
+ _rbb(rbb,PullNone),
+ _io(io1,io2,io3,io4,io5,io6,io7,io8) {
+ _io.mode(PullNone);
+ _io.input();
+
+}
+void RawNAND::reset() {
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+ // RESET COMMAND (0xff)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io=0xff;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+ _web = 1;
+ // wait hold time : max(tCLH,tALH,tDH,tWH,tWB,tCH)
+ wait_us(tWB_US);
+ // check tRBB;
+ while (_rbb==0){
+ __NOP();
+ }
+ _ceb = 1;
+}
+void RawNAND::idRead(uint8_t * readData) {
+ // ID READ COMMAND (0x90)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io=0x90;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+ _web = 1;
+ // wait hold time : max(tCLH,tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // IO READ ADDRESS (0x00)
+ _cle=0;
+ _ale=1;
+ _web=0;
+ _io=0x00;
+ // wait setup time : max(tCLS,tALS,tDS,tWP)
+ wait_us(tCLS_US);
+ _web=1;
+ // wait hold time : max(tCLH,tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // ALE low and IO input
+ _ale=0;
+ _io.input();
+ // ALE low to tREB low : tAR
+ wait_us(tAR_US);
+
+ // IO READ read data
+ for (int l=0;l<5;l++) {
+ _reb = 0;
+ // wait max(tREA,tRP)
+ wait_us(tREA_US);
+ *(readData+l)=_io;
+ _reb = 1;
+ // wait tREH
+ wait_us(tREH_US);
+ }
+ // wait io hiz
+ _ceb = 1;
+ wait_us(tCHZ_US);
+}
+uint8_t RawNAND::statusRead() {
+ uint8_t status;
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ // STATUS READ COMMAND (0x70)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io=0x70;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+ _cle = 0;
+ _io.input();
+ // wait max(tWHR-tWH,tCLR-tWH)
+ wait_us(tWHR_US-tWH_US);
+ _reb = 0;
+ // wait max(tREA,tRP)
+ wait_us(tREA_US);
+ status = _io;
+ _reb = 1;
+ // wait tREH
+ wait_us(tREH_US);
+ _ceb = 1;
+ wait_us(tCHZ_US);
+ // wait io hiz
+ return status;
+}
+
+void RawNAND::setWriteProtect(uint8_t writeProtect){
+ _wpb = writeProtect;
+ // wait tWW
+ wait_us(tWW_US);
+}
+
+void RawNAND::pageRead(uint8_t * readData,uint16_t blockAddress,uint8_t pageAddress,uint16_t columnAddress,uint16_t beats){
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ // 1ST READ COMMAND (0x00)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io=0x00;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 1st address column [7:0]
+ _cle = 0;
+ _ale = 1;
+ _web = 0;
+ _io = columnAddress & 0xff;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 2nd address column [11:8]
+ _web = 0;
+ _io = (columnAddress>>8) & 0x0f;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 3rd address {blockAddress[1:0],pageAddress[5:0]}
+ _web = 0;
+ _io = ((blockAddress<<6) | pageAddress) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 4th address blockAddress[9:2]
+ _web = 0;
+ _io = (blockAddress>>2) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 2ND READ COMMAND (0x30)
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io = 0x30;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH,tWB)
+ wait_us(tWB_US);
+
+ _cle = 0;
+ _io.input();
+
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ // wait tRR ( RBB to REB Low )
+ wait_us(tRR_US);
+
+ // read sequence
+ for (int b=0;b<beats;b++){
+ _reb = 0;
+ // wait max(tREA,tRP)
+ wait_us(tREA_US);
+ *(readData + b)= _io;
+ _reb = 1;
+ // wait tREH
+ wait_us(tREH_US);
+ }
+
+ _ceb = 1;
+ // wait io hiz
+ wait_us(tCHZ_US);
+
+}
+
+
+uint8_t RawNAND::erase(uint16_t blockAddress){
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ // 1ST READ COMMAND (0x60)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io=0x60;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+
+ // 1st page address {blockAddress[1:0],pageAddress[5:0]}
+ _cle = 0;
+ _ale = 1;
+ _web = 0;
+ _io = (blockAddress<<6) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 2nd page address blockAddress[9:2]
+ _web = 0;
+ _io = (blockAddress>>2) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 2ND READ COMMAND (0xD0)
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io = 0xD0;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH,tWB)
+ wait_us(tWB_US);
+
+ _cle = 0;
+ _io.input();
+
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ return statusRead();
+}
+
+uint8_t RawNAND::pageProgram(const uint8_t * writeData,uint16_t blockAddress,uint8_t pageAddress,uint16_t columnAddress,uint16_t beats){
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ // 1ST PROGRAM COMMAND (0x80)
+ _ceb = 0;
+ _cle = 1;
+ _ale = 0;
+ _web = 0;
+ _io = 0x80;
+ _io.output();
+ // wait setup time : max(tCS,tCLS,tALS,tDS,tWP)
+ wait_us(tCS_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 1st address column [7:0]
+ _cle = 0;
+ _ale = 1;
+ _web = 0;
+ _io = columnAddress & 0xff;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 2nd address column [11:8]
+ _web = 0;
+ _io = (columnAddress>>8) & 0x0f;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 3rd address {blockAddress[1:0],pageAddress[5:0]}
+ _web = 0;
+ _io = ((blockAddress<<6) | pageAddress) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // 4th address blockAddress[9:2]
+ _web = 0;
+ _io = (blockAddress>>2) ;
+ // wait setup time : max(tALS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+
+ // datain
+ _ale = 0;
+ for (int b=0;b<beats;b++) {
+ _io = *(writeData+b);
+ _web = 0;
+ // setup
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // hold
+ // wait hold time : max(tALH,tDH,tWH)
+ wait_us(tWH_US);
+ }
+
+ // 2ND PROGRAM COMMAND (0x10)
+ _cle = 1;
+ _ale = 0;
+ _io = 0x10;
+ _web = 0;
+ // wait setup time : max(tALS,tCLS,tDS,tWP)
+ wait_us(tWP_US);
+
+ _web = 1;
+ // wait hold time : max(tCLH,tDH,tWH,tWB)
+ wait_us(tWB_US);
+
+ _cle = 0;
+ _io.input();
+
+ // wait ready
+ while(_rbb==0){
+ __NOP();
+ }
+
+ return statusRead();
+}
\ No newline at end of file