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Finished testing the new functions I made for chip identification. It works well

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This commit is contained in:
Doug Brown 2011-12-10 18:57:17 -08:00
parent 8865d0c00f
commit 651c3a4be7
1 changed files with 10 additions and 93 deletions
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103
usb_serial/usb_serial.c
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@ -35,109 +35,26 @@ void USBSerial_Init(void)
USB_Init();
}
static int gotChar = 0;
void USBSerial_Check(void)
{
if (USB_DeviceState == DEVICE_STATE_Configured)
/*if (USB_DeviceState == DEVICE_STATE_Configured)
{
if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
{
CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/*#define BUFSIZE 128UL
static uint32_t readBuf[BUFSIZE];
struct ChipID chips[4];
ExternalMem_IdentifyChips(chips);
char tmp[20];
int x;
for (x = 0; x < 512UL * 1024UL / BUFSIZE; x++)
for (x = 0; x < 4; x++)
{
ExternalMem_Read(x*BUFSIZE, readBuf, BUFSIZE);
if (CDC_Device_SendData(&VirtualSerial_CDC_Interface, (const char *)readBuf, BUFSIZE*4) != ENDPOINT_RWSTREAM_NoError)
{
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);
sprintf(tmp, "IC%d: M%02X, D%02X\r\n", x, chips[x].manufacturerID, chips[x].deviceID);
CDC_Device_SendString(&VirtualSerial_CDC_Interface, tmp);
}
}
}
}*/
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();