Use _delay_us() function in the XPROGTarget.c file to ensure timing requirements...

[pub/USBasp.git] / Projects / AVRISP-MKII / Lib / XPROG / TINYNVM.c

diff --git a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
index 41e6852..e751303 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
@@ -1,13 +1,13 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r

-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r

               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r

-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r

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


@@ -40,7 +40,7 @@
 #warning TPI Protocol support is currently incomplete and is not suitable for general use.\r
 \r
 /** Sends the given pointer address to the target's TPI pointer register */\r
 #warning TPI Protocol support is currently incomplete and is not suitable for general use.\r
 \r
 /** Sends the given pointer address to the target's TPI pointer register */\r

-void TINYNVM_SendPointerAddress(const uint16_t AbsoluteAddress)\r
+static void TINYNVM_SendPointerAddress(const uint16_t AbsoluteAddress)\r

 {\r
        /* Send the given 16-bit address to the target, LSB first */\r
        XPROGTarget_SendByte(TPI_CMD_SSTPR | 0);\r
 {\r
        /* Send the given 16-bit address to the target, LSB first */\r
        XPROGTarget_SendByte(TPI_CMD_SSTPR | 0);\r


@@ -49,6 +49,28 @@ void TINYNVM_SendPointerAddress(const uint16_t AbsoluteAddress)
        XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[1]);\r
 }\r
 \r
        XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[1]);\r
 }\r
 \r

+/** Sends a SIN command to the target with the specified I/O address, ready for the data byte to be written.\r
+ *\r
+ *  \param[in] Address  6-bit I/O address to write to in the target's I/O memory space\r
+ */\r
+static void TINYNVM_SendReadNVMRegister(uint8_t Address)\r
+{\r
+       /* The TPI command for reading from the I/O space uses strange addressing, where the I/O address's upper\r
+        * two bits of the 6-bit address are shifted left once */\r
+       XPROGTarget_SendByte(TPI_CMD_SIN | ((Address & 0x30) << 1) | (Address & 0x0F));\r
+}\r
+\r
+/** Sends a SOUT command to the target with the specified I/O address, ready for the data byte to be read.\r
+ *\r
+ *  \param[in] Address  6-bit I/O address to read from in the target's I/O memory space\r
+ */\r
+static void TINYNVM_SendWriteNVMRegister(uint8_t Address)\r
+{\r
+       /* The TPI command for writing to the I/O space uses wierd addressing, where the I/O address's upper\r
+        * two bits of the 6-bit address are shifted left once */\r
+       XPROGTarget_SendByte(TPI_CMD_SOUT | ((Address & 0x30) << 1) | (Address & 0x0F));\r
+}\r
+\r

 /** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read.\r
  *\r
  *  \return Boolean true if the NVM controller became ready within the timeout period, false otherwise\r
 /** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read.\r
  *\r
  *  \return Boolean true if the NVM controller became ready within the timeout period, false otherwise\r


@@ -77,9 +99,11 @@ bool TINYNVM_WaitWhileNVMControllerBusy(void)
        /* Poll the STATUS register to check to see if NVM access has been enabled */\r
        while (TimeoutMSRemaining)\r
        {\r
        /* Poll the STATUS register to check to see if NVM access has been enabled */\r
        while (TimeoutMSRemaining)\r
        {\r

-               /* Send the SIN command to read the TPI STATUS register to see the NVM bus is active */\r
-               XPROGTarget_SendByte(TPI_CMD_SIN | XPROG_Param_NVMCSRRegAddr);\r
-               if (XPROGTarget_ReceiveByte() & (1 << 7))\r
+               /* Send the SIN command to read the TPI STATUS register to see the NVM bus is busy */\r
+               TINYNVM_SendReadNVMRegister(XPROG_Param_NVMCSRRegAddr);\r
+\r
+               /* Check to see if the BUSY flag is still set */\r
+               if (!(XPROGTarget_ReceiveByte() & (1 << 7)))\r

                  return true;\r
        }\r
        \r
                  return true;\r
        }\r
        \r


@@ -94,14 +118,14 @@ bool TINYNVM_WaitWhileNVMControllerBusy(void)
  *\r
  *  \return Boolean true if the command sequence complete successfully\r
  */\r
  *\r
  *  \return Boolean true if the command sequence complete successfully\r
  */\r

-bool TINYNVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadSize)\r
+bool TINYNVM_ReadMemory(const uint16_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadSize)\r

 {\r
        /* Wait until the NVM controller is no longer busy */\r
        if (!(TINYNVM_WaitWhileNVMControllerBusy()))\r
          return false;\r
 \r
        /* Set the NVM control register to the NO OP command for memory reading */\r
 {\r
        /* Wait until the NVM controller is no longer busy */\r
        if (!(TINYNVM_WaitWhileNVMControllerBusy()))\r
          return false;\r
 \r
        /* Set the NVM control register to the NO OP command for memory reading */\r

-       XPROGTarget_SendByte(TPI_CMD_SOUT | XPROG_Param_NVMCMDRegAddr);\r
+       TINYNVM_SendWriteNVMRegister(XPROG_Param_NVMCMDRegAddr);\r

        XPROGTarget_SendByte(TINY_NVM_CMD_NOOP);\r
        \r
        /* Send the address of the location to read from */\r
        XPROGTarget_SendByte(TINY_NVM_CMD_NOOP);\r
        \r
        /* Send the address of the location to read from */\r


@@ -125,14 +149,14 @@ bool TINYNVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_
  *\r
  *  \return Boolean true if the command sequence complete successfully\r
  */\r
  *\r
  *  \return Boolean true if the command sequence complete successfully\r
  */\r

-bool TINYNVM_WriteMemory(const uint32_t WriteAddress, const uint8_t* WriteBuffer, uint16_t WriteLength)\r
+bool TINYNVM_WriteMemory(const uint16_t WriteAddress, const uint8_t* WriteBuffer, uint16_t WriteLength)\r

 {\r
        /* Wait until the NVM controller is no longer busy */\r
        if (!(TINYNVM_WaitWhileNVMControllerBusy()))\r
          return false;\r
 \r
        /* Set the NVM control register to the WORD WRITE command for memory reading */\r
 {\r
        /* Wait until the NVM controller is no longer busy */\r
        if (!(TINYNVM_WaitWhileNVMControllerBusy()))\r
          return false;\r
 \r
        /* Set the NVM control register to the WORD WRITE command for memory reading */\r

-       XPROGTarget_SendByte(TPI_CMD_SOUT | XPROG_Param_NVMCMDRegAddr);\r
+       TINYNVM_SendWriteNVMRegister(XPROG_Param_NVMCMDRegAddr);\r

        XPROGTarget_SendByte(TINY_NVM_CMD_WORDWRITE);\r
        \r
        /* Send the address of the location to write to */\r
        XPROGTarget_SendByte(TINY_NVM_CMD_WORDWRITE);\r
        \r
        /* Send the address of the location to write to */\r


@@ -159,7 +183,7 @@ bool TINYNVM_EraseMemory(void)
          return false;\r
 \r
        /* Set the NVM control register to the CHIP ERASE command to erase the target */\r
          return false;\r
 \r
        /* Set the NVM control register to the CHIP ERASE command to erase the target */\r

-       XPROGTarget_SendByte(TPI_CMD_SOUT | XPROG_Param_NVMCMDRegAddr);\r
+       TINYNVM_SendWriteNVMRegister(XPROG_Param_NVMCMDRegAddr);\r

        XPROGTarget_SendByte(TINY_NVM_CMD_CHIPERASE);   \r
 \r
        /* Wait until the NVM bus is ready again */\r
        XPROGTarget_SendByte(TINY_NVM_CMD_CHIPERASE);   \r
 \r
        /* Wait until the NVM bus is ready again */\r