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95 lines
4.0 KiB
95 lines
4.0 KiB
5 years ago
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// ----------------------------------------------------------------------------
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// ATMEL Microcontroller Software Support - ROUSSET -
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// ----------------------------------------------------------------------------
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// DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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// DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// ----------------------------------------------------------------------------
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// File Name : SAM7_RAM.mac
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// Object : Generic Macro File for IAR
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// 1.0 17/Aug/05 FBr : Creation
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// ----------------------------------------------------------------------------
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/*********************************************************************
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*
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* _MapRAMAt0()
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*
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* Function description
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* Maps RAM at 0.
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*/
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_MapRAMAt0(){
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__message "Changing mapping: RAM mapped to 0";
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__writeMemory32(0x00000001,0xFFFFFF00,"Memory");
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}
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/*********************************************************************
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*
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* _InitRSTC()
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*
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* Function description
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* Initializes the RSTC (Reset controller).
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* This makes sense since the default is to not allow user resets, which makes it impossible to
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* apply a second RESET via J-Link
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*/
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_InitRSTC() {
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__writeMemory32(0xA5000001, 0xFFFFFD08,"Memory"); // Allow user reset
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}
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/*********************************************************************
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*
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* _InitPLL()
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* Function description
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* Initializes the PMC.
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* 1. Enable the Main Oscillator
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* 2. Configure PLL to 96MHz
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* 3. Switch Master Clock (MCK) on PLL/2 = 48MHz
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*/
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_InitPLL() {
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__message "Set Main Oscillator";
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__writeMemory32(0x00004001,0xFFFFFc20,"Memory"); // MOSC
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while( !(__readMemory32(0xFFFFFc68,"Memory") & 0x1) );
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__message "Set PLL to 96MHz";
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__writeMemory32(0x10483f0e,0xFFFFFc2c,"Memory"); // LOCK
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while( !(__readMemory32(0xFFFFFc68,"Memory") & 0x4) );
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__message "Set Master Clock to 48MHz";
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__writeMemory32(0x00000004,0xFFFFFc30,"Memory"); // MCKRDY
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while( !(__readMemory32(0xFFFFFc68,"Memory") & 0x8) );
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__writeMemory32(0x00000007,0xFFFFFc30,"Memory"); // MCKRDY
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while( !(__readMemory32(0xFFFFFc68,"Memory") & 0x8) );
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}
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/*********************************************************************
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*
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* execUserReset() : JTAG set initially to Full Speed
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*/
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execUserReset() {
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__message "execUserReset()";
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__emulatorSpeed(30000); // Set JTAG speed to 30kHz to make a hardware reset
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__hwReset(0); // Hardware Reset: CPU is automatically halted after the reset
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_InitPLL(); // Allow to debug at JTAG Full Speed
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_MapRAMAt0(); // Remap RAM to address 0
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__emulatorSpeed(0); // Set JTAG speed to full speed
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}
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/*********************************************************************
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*
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* execUserPreload() : JTAG set initially to 32kHz
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*/
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execUserPreload() {
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__message "execUserPreload()";
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__hwReset(0); // Hardware Reset: CPU is automatically halted after the reset (JTAG is already configured to 32kHz)
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_InitPLL(); // Allow to load Code at JTAG Full Speed
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_MapRAMAt0(); // Remap RAM to address 0
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_InitRSTC(); // Enable User Reset to allow execUserReset() execution
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}
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