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I got the device identification working, and I'm in the middle of breaking it into its own set of functions for write cycles, read cycles, unlock sequence, etc.

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Doug Brown 2011-12-10 18:40:30 -08:00
parent 1540bcadd1
commit 8865d0c00f
4 changed files with 164 additions and 108 deletions
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10
.cproject
View File

@ -41,9 +41,8 @@
<listOptionValue builtIn="false" value="FIXED_NUM_CONFIGURATIONS=1"/> <listOptionValue builtIn="false" value="FIXED_NUM_CONFIGURATIONS=1"/>
<listOptionValue builtIn="false" value="USE_FLASH_DESCRIPTORS"/> <listOptionValue builtIn="false" value="USE_FLASH_DESCRIPTORS"/>
<listOptionValue builtIn="false" value="USE_STATIC_OPTIONS=&quot;(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)&quot;"/> <listOptionValue builtIn="false" value="USE_STATIC_OPTIONS=&quot;(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)&quot;"/>
<listOptionValue builtIn="false" value="INTERRUPT_CONTROL_ENDPOINT"/>
</option> </option>
<option id="de.innot.avreclipse.compiler.option.otherflags.1513967861" superClass="de.innot.avreclipse.compiler.option.otherflags" value="-ffunction-sections -fdata-sections" valueType="string"/> <option id="de.innot.avreclipse.compiler.option.otherflags.1513967861" name="Other flags" superClass="de.innot.avreclipse.compiler.option.otherflags" value="-ffunction-sections -fdata-sections" valueType="string"/>
<inputType id="de.innot.avreclipse.compiler.winavr.input.1367172122" name="C Source Files" superClass="de.innot.avreclipse.compiler.winavr.input"/> <inputType id="de.innot.avreclipse.compiler.winavr.input.1367172122" name="C Source Files" superClass="de.innot.avreclipse.compiler.winavr.input"/>
</tool> </tool>
<tool id="de.innot.avreclipse.tool.cppcompiler.app.debug.24092953" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.app.debug"> <tool id="de.innot.avreclipse.tool.cppcompiler.app.debug.24092953" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.app.debug">
@ -51,7 +50,7 @@
<option id="de.innot.avreclipse.cppcompiler.option.optimize.1022518531" name="Optimization Level" superClass="de.innot.avreclipse.cppcompiler.option.optimize"/> <option id="de.innot.avreclipse.cppcompiler.option.optimize.1022518531" name="Optimization Level" superClass="de.innot.avreclipse.cppcompiler.option.optimize"/>
</tool> </tool>
<tool id="de.innot.avreclipse.tool.linker.winavr.app.debug.806884166" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.app.debug"> <tool id="de.innot.avreclipse.tool.linker.winavr.app.debug.806884166" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.app.debug">
<option id="de.innot.avreclipse.linker.option.otherlinkargs.1714687929" superClass="de.innot.avreclipse.linker.option.otherlinkargs" value="-Wl,--relax,--gc-sections" valueType="string"/> <option id="de.innot.avreclipse.linker.option.otherlinkargs.1714687929" name="Other Arguments" superClass="de.innot.avreclipse.linker.option.otherlinkargs" value="-Wl,--relax,--gc-sections" valueType="string"/>
<inputType id="de.innot.avreclipse.tool.linker.input.1020880987" name="OBJ Files" superClass="de.innot.avreclipse.tool.linker.input"> <inputType id="de.innot.avreclipse.tool.linker.input.1020880987" name="OBJ Files" superClass="de.innot.avreclipse.tool.linker.input">
<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/> <additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
<additionalInput kind="additionalinput" paths="$(LIBS)"/> <additionalInput kind="additionalinput" paths="$(LIBS)"/>
@ -423,9 +422,8 @@
<listOptionValue builtIn="false" value="FIXED_NUM_CONFIGURATIONS=1"/> <listOptionValue builtIn="false" value="FIXED_NUM_CONFIGURATIONS=1"/>
<listOptionValue builtIn="false" value="USE_FLASH_DESCRIPTORS"/> <listOptionValue builtIn="false" value="USE_FLASH_DESCRIPTORS"/>
<listOptionValue builtIn="false" value="USE_STATIC_OPTIONS=&quot;(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)&quot;"/> <listOptionValue builtIn="false" value="USE_STATIC_OPTIONS=&quot;(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)&quot;"/>
<listOptionValue builtIn="false" value="INTERRUPT_CONTROL_ENDPOINT"/>
</option> </option>
<option id="de.innot.avreclipse.compiler.option.otherflags.1566165436" superClass="de.innot.avreclipse.compiler.option.otherflags" value="-ffunction-sections -fdata-sections" valueType="string"/> <option id="de.innot.avreclipse.compiler.option.otherflags.1566165436" name="Other flags" superClass="de.innot.avreclipse.compiler.option.otherflags" value="-ffunction-sections -fdata-sections" valueType="string"/>
<inputType id="de.innot.avreclipse.compiler.winavr.input.2084198580" name="C Source Files" superClass="de.innot.avreclipse.compiler.winavr.input"/> <inputType id="de.innot.avreclipse.compiler.winavr.input.2084198580" name="C Source Files" superClass="de.innot.avreclipse.compiler.winavr.input"/>
</tool> </tool>
<tool id="de.innot.avreclipse.tool.cppcompiler.app.release.912002244" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.app.release"> <tool id="de.innot.avreclipse.tool.cppcompiler.app.release.912002244" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.app.release">
@ -433,7 +431,7 @@
<option id="de.innot.avreclipse.cppcompiler.option.optimize.1657124646" name="Optimization Level" superClass="de.innot.avreclipse.cppcompiler.option.optimize" value="de.innot.avreclipse.cppcompiler.optimize.size" valueType="enumerated"/> <option id="de.innot.avreclipse.cppcompiler.option.optimize.1657124646" name="Optimization Level" superClass="de.innot.avreclipse.cppcompiler.option.optimize" value="de.innot.avreclipse.cppcompiler.optimize.size" valueType="enumerated"/>
</tool> </tool>
<tool id="de.innot.avreclipse.tool.linker.winavr.app.release.381852607" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.app.release"> <tool id="de.innot.avreclipse.tool.linker.winavr.app.release.381852607" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.app.release">
<option id="de.innot.avreclipse.linker.option.otherlinkargs.270243458" superClass="de.innot.avreclipse.linker.option.otherlinkargs" value="-Wl,--relax,--gc-sections" valueType="string"/> <option id="de.innot.avreclipse.linker.option.otherlinkargs.270243458" name="Other Arguments" superClass="de.innot.avreclipse.linker.option.otherlinkargs" value="-Wl,--relax,--gc-sections" valueType="string"/>
<inputType id="de.innot.avreclipse.tool.linker.input.567763029" name="OBJ Files" superClass="de.innot.avreclipse.tool.linker.input"> <inputType id="de.innot.avreclipse.tool.linker.input.567763029" name="OBJ Files" superClass="de.innot.avreclipse.tool.linker.input">
<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/> <additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
<additionalInput kind="additionalinput" paths="$(LIBS)"/> <additionalInput kind="additionalinput" paths="$(LIBS)"/>

62
external_mem.c
View File

@ -8,6 +8,7 @@
#include "external_mem.h" #include "external_mem.h"
#include "ports.h" #include "ports.h"
#include <avr/io.h> #include <avr/io.h>
#include <avr/delay.h>
#define HIGHEST_ADDRESS_LINE 20 #define HIGHEST_ADDRESS_LINE 20
@ -124,3 +125,64 @@ void ExternalMem_Read(uint32_t startAddress, uint32_t *buf, uint32_t len)
*buf++ = tmp; *buf++ = tmp;
} }
} }
void ExternalMem_WriteCycle(uint32_t address, uint32_t data)
{
ExternalMem_SetAddressAndData(address, data);
ExternalMem_AssertWE();
_delay_us(1); // Give it a small amount of time needed? Could I do this with some NOP instructions instead of waiting 1us?
ExternalMem_DeassertWE();
}
void ExternalMem_UnlockAllChips(void)
{
// Disable the chips completely and wait for a short time...
ExternalMem_DeassertCS();
ExternalMem_DeassertOE();
ExternalMem_DeassertWE();
_delay_us(1);
ExternalMem_AssertCS();
// First part of unlock sequence:
// Write 0x55555555 to the address bus and 0xAA to the data bus
// (Some datasheets may only say 0x555 or 0x5555, but they ignore
// the upper bits, so writing the alternating pattern to all address lines
// should make it compatible with larger chips)
ExternalMem_WriteCycle(0x55555555UL, 0xAAAAAAAAUL);
// Second part of unlock sequence is the same thing, but reversed.
ExternalMem_WriteCycle(0xAAAAAAAAUL, 0x55555555UL);
}
void ExternalMem_IdentifyChips(struct ChipID *chips)
{
ExternalMem_UnlockAllChips();
// Write 0x90 to 0x55555555 for the identify command...
ExternalMem_WriteCycle(0x55555555UL, 0x90909090UL);
// Now we can read the vendor and product ID
ExternalMem_SetAddress(0);
ExternalMem_SetDataAsInput();
ExternalMem_AssertOE();
uint32_t result = ExternalMem_ReadData();
chips[3].manufacturerID = (uint8_t)result;
chips[2].manufacturerID = (uint8_t)(result >> 8);
chips[1].manufacturerID = (uint8_t)(result >> 16);
chips[0].manufacturerID = (uint8_t)(result >> 24);
ExternalMem_SetAddress(1);
result = ExternalMem_ReadData();
chips[3].deviceID = (uint8_t)result;
chips[2].deviceID = (uint8_t)(result >> 8);
chips[1].deviceID = (uint8_t)(result >> 16);
chips[0].deviceID = (uint8_t)(result >> 24);
// Exit software ID mode
ExternalMem_DeassertOE();
ExternalMem_WriteCycle(0, 0xF0F0F0F0UL);
}

16
external_mem.h
View File

@ -11,6 +11,13 @@
#include <stdint.h> #include <stdint.h>
#include <stdbool.h> #include <stdbool.h>
// Holds info about the chip (retrieved with JEDEC standards)
struct ChipID
{
uint8_t manufacturerID;
uint8_t deviceID;
};
// Initializes the (bit-banged) external memory interface // Initializes the (bit-banged) external memory interface
void ExternalMem_Init(void); void ExternalMem_Init(void);
@ -44,4 +51,13 @@ void ExternalMem_DeassertOE(void);
// Reads a set of data... // Reads a set of data...
void ExternalMem_Read(uint32_t startAddress, uint32_t *buf, uint32_t len); void ExternalMem_Read(uint32_t startAddress, uint32_t *buf, uint32_t len);
// Performs a write cycle
void ExternalMem_WriteCycle(uint32_t address, uint32_t data);
// Does an unlock sequence on the chips
void ExternalMem_UnlockAllChips(void);
// Identifies the chips that are currently in the SIMM
void ExternalMem_IdentifyChips(struct ChipID *chips);
#endif /* EXTERNAL_MEM_H_ */ #endif /* EXTERNAL_MEM_H_ */

184
usb_serial/usb_serial.c
View File

@ -43,30 +43,8 @@ void USBSerial_Check(void)
if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface)) if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
{ {
CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface); CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
//CDC_Device_SendString(&VirtualSerial_CDC_Interface, "Reading...");
//CDC_Device_Flush(&VirtualSerial_CDC_Interface);
/*uint32_t mem = ExternalMem_ReadData(); /*#define BUFSIZE 128UL
char dataString[11];
sprintf(dataString, "%08lX\r\n", mem);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, dataString);
sprintf(dataString, "%02X%02X%02X%02X\r\n",
(uint8_t)(mem>>24),
(uint8_t)(mem>>16),
(uint8_t)(mem>>8),
(uint8_t)(mem>>0));
CDC_Device_SendString(&VirtualSerial_CDC_Interface, dataString);
sprintf(dataString, "%02X %02X %02X\r\n", DDRA, DDRC, DDRD);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, dataString);*/
#define BUFSIZE 128UL
static uint32_t readBuf[BUFSIZE]; static uint32_t readBuf[BUFSIZE];
int x; int x;
for (x = 0; x < 512UL * 1024UL / BUFSIZE; x++) for (x = 0; x < 512UL * 1024UL / BUFSIZE; x++)
@ -77,86 +55,88 @@ void USBSerial_Check(void)
{ {
PORTD |= (1 << 7); PORTD |= (1 << 7);
} }
//int y;
//for (y = 0; y < BUFSIZE; y++)
//{
//if ((y % 4) == 0) CDC_Device_SendString(&VirtualSerial_CDC_Interface, ".\r\n");
//char tmpBuf[20];
//sprintf(tmpBuf, "%02X %02X %02X %02X ",
// (uint8_t)(readBuf[y] >> 24),
// (uint8_t)(readBuf[y] >> 16),
// (uint8_t)(readBuf[y] >> 8),
// (uint8_t)(readBuf[y] >> 0));
//CDC_Device_SendString(&VirtualSerial_CDC_Interface, tmpBuf);
//}
//if ((x % 64) == 0) CDC_Device_SendString(&VirtualSerial_CDC_Interface, "\r\n");
//CDC_Device_SendString(&VirtualSerial_CDC_Interface, ".");
//CDC_Device_Flush(&VirtualSerial_CDC_Interface);
}
//CDC_Device_SendString(&VirtualSerial_CDC_Interface, "\r\nDone\r\n");
}
/*int16_t rb = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
if (rb >= 0)
{
if (rb == '.')
{
gotChar = 0;
}
else
{
gotChar = 1;
}
}
if (gotChar)
{*/
//if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface, 'A') != ENDPOINT_READYWAIT_NoError)
/*if (CDC_Device_SendData(&VirtualSerial_CDC_Interface,
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
"ASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDFASDF"
, 2048) != ENDPOINT_RWSTREAM_NoError)
{
PORTD |= (1 << 7);
}
else
{
PORTD &= ~(1 << 7);
}*/ }*/
//}
// Start out in programming state...
ExternalMem_DeassertCS();
ExternalMem_DeassertOE();
ExternalMem_DeassertWE();
_delay_us(1);
// Write 0xAA to 0x555 (first byte of unlock sequence)
// (The SST39SF040 asks for 0x5555 here -- but it doesn't matter, it's
// just an alternating pattern of 1s and 0s and the chips will ignore
// the bits above the value it asks for -- so I can just write a huge
// alternating pattern and it will work with most/all chips)
ExternalMem_SetAddressAndData(0x55555555UL, 0xAAAAAAAAUL);
ExternalMem_AssertCS();
ExternalMem_AssertWE();
_delay_us(1);
ExternalMem_DeassertWE();
_delay_us(1);
// Write 0x55 to 0x2AA (second byte of unlock sequence)
ExternalMem_SetAddressAndData(0xAAAAAAAAUL, 0x55555555UL);
ExternalMem_AssertWE();
_delay_us(1);
ExternalMem_DeassertWE();
_delay_us(1);
// Write 0x90 to 0x555 (autoselect command)
ExternalMem_SetAddressAndData(0x55555555UL, 0x90909090UL);
ExternalMem_AssertWE();
_delay_us(1);
ExternalMem_DeassertWE();
//ExternalMem_DeassertCS();
_delay_us(1);
// Now we can start reading...
ExternalMem_SetAddress(0x0);
ExternalMem_SetDataAsInput();
ExternalMem_AssertOE();
//ExternalMem_AssertCS();
_delay_us(1);
uint32_t result = ExternalMem_ReadData();
char test[20];
sprintf(test, "%08lX ", result);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, test);
ExternalMem_SetAddress(0x1);
result = ExternalMem_ReadData();
sprintf(test, "%08lX\r\n", result);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, test);
// Exit back to normal mode...
ExternalMem_DeassertOE();
ExternalMem_SetAddressAndData(0x0, 0xF0F0F0F0UL);
//ExternalMem_AssertCS();
ExternalMem_AssertWE();
_delay_us(1);
ExternalMem_DeassertWE();
//ExternalMem_DeassertCS();
_delay_us(1);
// Now do normal read cycle to confirm we exited
ExternalMem_SetAddress(0x0);
ExternalMem_SetDataAsInput();
ExternalMem_AssertOE();
//ExternalMem_AssertCS();
_delay_us(1);
result = ExternalMem_ReadData();
sprintf(test, "%08lX ", result);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, test);
ExternalMem_SetAddress(0x1);
result = ExternalMem_ReadData();
sprintf(test, "%08lX\r\n", result);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, test);
}
} }
CDC_Device_USBTask(&VirtualSerial_CDC_Interface); CDC_Device_USBTask(&VirtualSerial_CDC_Interface);