Add software FIFOs to the UC3B pipe control interfaces, to match the endpoint control...

[pub/USBasp.git] / Projects / AVRISP-MKII / Lib / ISP / ISPTarget.c

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
index fe2f50d..373e191 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2011.

 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted


@@ -108,15 +108,16 @@ static uint16_t TimerCompareFromSCKDuration[] PROGMEM =
 bool HardwareSPIMode = true;
 
 /** Software SPI data register for sending and receiving */
 bool HardwareSPIMode = true;
 
 /** Software SPI data register for sending and receiving */

-volatile uint8_t SoftSPI_Data;
+static volatile uint8_t SoftSPI_Data;

 
 /** Number of bits left to transfer in the software SPI driver */
 
 /** Number of bits left to transfer in the software SPI driver */

-volatile uint8_t SoftSPI_BitsRemaining;
+static volatile uint8_t SoftSPI_BitsRemaining;

 
 
 /** ISR to handle software SPI transmission and reception */
 ISR(TIMER1_COMPA_vect, ISR_BLOCK)
 {
 
 
 /** ISR to handle software SPI transmission and reception */
 ISR(TIMER1_COMPA_vect, ISR_BLOCK)
 {

+       /* Check if rising edge (output next bit) or falling edge (read in next bit) */

        if (!(PINB & (1 << 1)))
        {
                if (SoftSPI_Data & (1 << 7))
        if (!(PINB & (1 << 1)))
        {
                if (SoftSPI_Data & (1 << 7))


@@ -142,7 +143,7 @@ ISR(TIMER1_COMPA_vect, ISR_BLOCK)
 /** Initialises the appropriate SPI driver (hardware or software, depending on the selected ISP speed) ready for
  *  communication with the attached target.
  */
 /** Initialises the appropriate SPI driver (hardware or software, depending on the selected ISP speed) ready for
  *  communication with the attached target.
  */

-void ISPTarget_Init(void)
+void ISPTarget_EnableTargetISP(void)

 {
        uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
 
 {
        uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
 


@@ -167,17 +168,19 @@ void ISPTarget_Init(void)
 /** Shuts down the current selected SPI driver (hardware or software, depending on the selected ISP speed) so that no
  *  further communications can occur until the driver is re-initialized.
  */
 /** Shuts down the current selected SPI driver (hardware or software, depending on the selected ISP speed) so that no
  *  further communications can occur until the driver is re-initialized.
  */

-void ISPTarget_ShutDown(void)
+void ISPTarget_DisableTargetISP(void)

 {
        if (HardwareSPIMode)
        {
 {
        if (HardwareSPIMode)
        {

-               SPI_ShutDown();
+               SPI_Disable();

        }
        else
        {
                DDRB  &= ~((1 << 1) | (1 << 2));
                PORTB &= ~((1 << 0) | (1 << 3));
                
        }
        else
        {
                DDRB  &= ~((1 << 1) | (1 << 2));
                PORTB &= ~((1 << 0) | (1 << 3));
                

+               /* Must re-enable rescue clock once software ISP has exited, as the timer for the rescue clock is
+                * re-purposed for software SPI */

                ISPTarget_ConfigureRescueClock();
        }
 }
                ISPTarget_ConfigureRescueClock();
        }
 }


@@ -189,19 +192,29 @@ void ISPTarget_ShutDown(void)
  */
 void ISPTarget_ConfigureRescueClock(void)
 {
  */
 void ISPTarget_ConfigureRescueClock(void)
 {

-       /* Configure OCR1A as an output for the specified AVR model */
-       #if defined(USB_SERIES_2_AVR)
-       DDRC |= (1 << 6);
+       #if defined(XCK_RESCUE_CLOCK_ENABLE)
+               /* Configure XCK as an output for the specified AVR model */
+               DDRD  |= (1 << 5);
+               
+               /* Start USART to generate a 4MHz clock on the XCK pin */
+               UBRR1  = ((F_CPU / 2 / ISP_RESCUE_CLOCK_SPEED) - 1);
+               UCSR1B = (1 << TXEN1);
+               UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);

        #else
        #else

-       DDRB |= (1 << 5);
+               /* Configure OCR1A as an output for the specified AVR model */
+               #if defined(USB_SERIES_2_AVR)
+               DDRC |= (1 << 6);
+               #else
+               DDRB |= (1 << 5);
+               #endif
+
+               /* Start Timer 1 to generate a 4MHz clock on the OCR1A pin */
+               TIMSK1 = 0;
+               TCNT1  = 0;
+               OCR1A  = ((F_CPU / 2 / ISP_RESCUE_CLOCK_SPEED) - 1);
+               TCCR1A = (1 << COM1A0);
+               TCCR1B = ((1 << WGM12) | (1 << CS10));

        #endif
        #endif

-
-       /* Start Timer 1 to generate a .5MHz clock on the OCR1A pin */
-       TIMSK1 = 0;
-       TCNT1  = 0;
-       OCR1A  = (F_CPU / 2 / 500000UL);
-       TCCR1A = (1 << COM1A0);
-       TCCR1B = ((1 << WGM12) | (1 << CS10));

 }
 
 /** Configures the AVR's timer ready to produce software ISP for the slower ISP speeds that
 }
 
 /** Configures the AVR's timer ready to produce software ISP for the slower ISP speeds that


@@ -237,7 +250,7 @@ uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte)
 
        TCNT1  = 0;
        TCCR1B = ((1 << WGM12) | (1 << CS11));
 
        TCNT1  = 0;
        TCCR1B = ((1 << WGM12) | (1 << CS11));

-       while (SoftSPI_BitsRemaining && TimeoutTicksRemaining);
+       while (SoftSPI_BitsRemaining && !(TimeoutExpired));

        TCCR1B = 0;
 
        return SoftSPI_Data;
        TCCR1B = 0;
 
        return SoftSPI_Data;


@@ -279,9 +292,9 @@ uint8_t ISPTarget_WaitWhileTargetBusy(void)
                ISPTarget_SendByte(0x00);
                ISPTarget_SendByte(0x00);
        }
                ISPTarget_SendByte(0x00);
                ISPTarget_SendByte(0x00);
        }

-       while ((ISPTarget_ReceiveByte() & 0x01) && TimeoutTicksRemaining);
+       while ((ISPTarget_ReceiveByte() & 0x01) && !(TimeoutExpired));

 
 

-       return TimeoutTicksRemaining ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT;
+       return (TimeoutExpired) ? STATUS_RDY_BSY_TOUT : STATUS_CMD_OK;

 }
 
 /** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
 }
 
 /** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the


@@ -331,9 +344,9 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
                                ISPTarget_SendByte(PollAddress >> 8);
                                ISPTarget_SendByte(PollAddress & 0xFF);
                        }
                                ISPTarget_SendByte(PollAddress >> 8);
                                ISPTarget_SendByte(PollAddress & 0xFF);
                        }

-                       while ((ISPTarget_TransferByte(0x00) == PollValue) && TimeoutTicksRemaining);
+                       while ((ISPTarget_TransferByte(0x00) == PollValue) && !(TimeoutExpired));

 
 

-                       if (!(TimeoutTicksRemaining))
+                       if (TimeoutExpired)

                         ProgrammingStatus = STATUS_CMD_TOUT;
 
                        break;
                         ProgrammingStatus = STATUS_CMD_TOUT;
 
                        break;