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Add GPIO Interrupt Code

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Abhijit Kshirsagar Kshirsagar 2023-09-04 10:37:29 +05:30
parent 169e06990e
commit dd679556d5
15 changed files with 13593 additions and 23 deletions
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17
GPIO_Interrupts/.ccsproject Normal file
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GPIO_Interrupts/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>GPIO_Interrupts</name>
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3
GPIO_Interrupts/.settings/org.eclipse.cdt.codan.core.prefs Normal file
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eclipse.preferences.version=1
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2
GPIO_Interrupts/.settings/org.eclipse.cdt.debug.core.prefs Normal file
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eclipse.preferences.version=1
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6
GPIO_Interrupts/.settings/org.eclipse.core.resources.prefs Normal file
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eclipse.preferences.version=1
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encoding//Debug/subdir_vars.mk=UTF-8

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GPIO_Interrupts/main.c Normal file
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#include <stdint.h>
#include "tm4c123gh6pm.h"
/**
* main.c
*/
void GPIO_PORTF_Init(void);
void SystickHandler(void);
void Systick_Init(void);
volatile uint32_t systick_count = 1;
int main(void)
{
GPIO_PORTF_Init();
//Systick_Init();
while(1);
}
void SW2_Handler(void)
{
GPIO_PORTF_DATA_R ^= 0x8;
GPIO_PORTF_ICR_R = 0xff;
}
void SystickHandler(void)
{
systick_count++;
if(systick_count==1000)
{
systick_count = 0;
GPIO_PORTF_DATA_R ^= 0x2;
}
}
void Systick_Init()
{
NVIC_ST_RELOAD_R = 0x9C4;
NVIC_ST_CURRENT_R = 0x0;
//Enable Systick:
// SYST_CSR = 0x00000101 -- 0x5
NVIC_ST_CTRL_R = 0x5;
}
void GPIO_PORTF_Init(void)
{
//PF0 <-- SW2
//PF4 <-- SW1
//Need to enable interrupt on SW1
SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOF;
GPIO_PORTF_DEN_R = 0x1F;
GPIO_PORTF_PUR_R = 0x11;
GPIO_PORTF_DIR_R = 0x0E;
//Shut off all LEDs:
GPIO_PORTF_DATA_R=0x0;
// Enabling Interrupts
//GPIOIS -- Interrupt Sense --> 0 for edge --> 0x0
GPIO_PORTF_IS_R = 0x0;
//GPIOIBE -- Both Edges --> 0 for single edge --> 0x0
GPIO_PORTF_IBE_R = 0x0;
//GPIOIEV -- Interropt Event --> 0 for falling edge --> 0x00
GPIO_PORTF_IEV_R = 0x0;
//GPIOICR -- INterrpt clear -- must be cleared by writing 1 to corresponding bit --> 0xff
GPIO_PORTF_ICR_R = 0xff;
//GPIOIM -- Interrupt Mask --> 1 for unmasked (enabled)--> 0x01
GPIO_PORTF_IM_R = 0x10;
//GPIORIS -- Raw Int Status
//GPIOMIS -- Masked Int Status
//Interrupt Number = 30
// EN0 -- 0x40000000
NVIC_EN0_R = 0x40000000;
}

13
GPIO_Interrupts/targetConfigs/Tiva TM4C123GH6PM.ccxml Normal file
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<configurations XML_version="1.2" id="configurations_0">
<configuration XML_version="1.2" id="configuration_0">
<instance XML_version="1.2" desc="Stellaris In-Circuit Debug Interface" href="connections/Stellaris_ICDI_Connection.xml" id="Stellaris In-Circuit Debug Interface" xml="Stellaris_ICDI_Connection.xml" xmlpath="connections"/>
<connection XML_version="1.2" id="Stellaris In-Circuit Debug Interface">
<instance XML_version="1.2" href="drivers/stellaris_cs_dap.xml" id="drivers" xml="stellaris_cs_dap.xml" xmlpath="drivers"/>
<instance XML_version="1.2" href="drivers/stellaris_cortex_m4.xml" id="drivers" xml="stellaris_cortex_m4.xml" xmlpath="drivers"/>
<platform XML_version="1.2" id="platform_0">
<instance XML_version="1.2" desc="Tiva TM4C123GH6PM" href="devices/tm4c123gh6pm.xml" id="Tiva TM4C123GH6PM" xml="tm4c123gh6pm.xml" xmlpath="devices"/>
</platform>
</connection>
</configuration>
</configurations>

9
GPIO_Interrupts/targetConfigs/readme.txt Normal file
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The 'targetConfigs' folder contains target-configuration (.ccxml) files, automatically generated based
on the device and connection settings specified in your project on the Properties > General page.
Please note that in automatic target-configuration management, changes to the project's device and/or
connection settings will either modify an existing or generate a new target-configuration file. Thus,
if you manually edit these auto-generated files, you may need to re-apply your changes. Alternatively,
you may create your own target-configuration file for this project and manage it manually. You can
always switch back to automatic target-configuration management by checking the "Manage the project's
target-configuration automatically" checkbox on the project's Properties > General page.

45
GPIO_Interrupts/tm4c123gh6pm.cmd Normal file
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/******************************************************************************
*
* Default Linker Command file for the Texas Instruments TM4C123GH6PM
*
* This is derived from revision 15071 of the TivaWare Library.
*
*****************************************************************************/
--retain=g_pfnVectors
MEMORY
{
FLASH (RX) : origin = 0x00000000, length = 0x00040000
SRAM (RWX) : origin = 0x20000000, length = 0x00008000
}
/* The following command line options are set as part of the CCS project. */
/* If you are building using the command line, or for some reason want to */
/* define them here, you can uncomment and modify these lines as needed. */
/* If you are using CCS for building, it is probably better to make any such */
/* modifications in your CCS project and leave this file alone. */
/* */
/* --heap_size=0 */
/* --stack_size=256 */
/* --library=rtsv7M4_T_le_eabi.lib */
/* Section allocation in memory */
SECTIONS
{
.intvecs: > 0x00000000
.text : > FLASH
.const : > FLASH
.cinit : > FLASH
.pinit : > FLASH
.init_array : > FLASH
.vtable : > 0x20000000
.data : > SRAM
.bss : > SRAM
.sysmem : > SRAM
.stack : > SRAM
}
__STACK_TOP = __stack + 512;

12867
GPIO_Interrupts/tm4c123gh6pm.h Normal file
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File diff suppressed because it is too large Load Diff

301
GPIO_Interrupts/tm4c123gh6pm_startup_ccs.c Normal file
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//*****************************************************************************
//
// Startup code for use with TI's Code Composer Studio.
//
// Copyright (c) 2011-2014 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
//*****************************************************************************
#include <stdint.h>
//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************
void ResetISR(void);
static void NmiSR(void);
static void FaultISR(void);
static void IntDefaultHandler(void);
extern void SW2_Handler(void);
//*****************************************************************************
//
// External declaration for the reset handler that is to be called when the
// processor is started
//
//*****************************************************************************
extern void _c_int00(void);
//*****************************************************************************
//
// Linker variable that marks the top of the stack.
//
//*****************************************************************************
extern uint32_t __STACK_TOP;
//*****************************************************************************
//
// External declarations for the interrupt handlers used by the application.
//
//*****************************************************************************
// To be added by user
//*****************************************************************************
//
// The vector table. Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000 or at the start of
// the program if located at a start address other than 0.
//
//*****************************************************************************
#pragma DATA_SECTION(g_pfnVectors, ".intvecs")
void (* const g_pfnVectors[])(void) =
{
(void (*)(void))((uint32_t)&__STACK_TOP),
// The initial stack pointer
ResetISR, // The reset handler
NmiSR, // The NMI handler
FaultISR, // The hard fault handler
IntDefaultHandler, // The MPU fault handler
IntDefaultHandler, // The bus fault handler
IntDefaultHandler, // The usage fault handler
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // SVCall handler
IntDefaultHandler, // Debug monitor handler
0, // Reserved
IntDefaultHandler, // The PendSV handler
IntDefaultHandler, // The SysTick handler
IntDefaultHandler, // GPIO Port A
IntDefaultHandler, // GPIO Port B
IntDefaultHandler, // GPIO Port C
IntDefaultHandler, // GPIO Port D
IntDefaultHandler, // GPIO Port E
IntDefaultHandler, // UART0 Rx and Tx
IntDefaultHandler, // UART1 Rx and Tx
IntDefaultHandler, // SSI0 Rx and Tx
IntDefaultHandler, // I2C0 Master and Slave
IntDefaultHandler, // PWM Fault
IntDefaultHandler, // PWM Generator 0
IntDefaultHandler, // PWM Generator 1
IntDefaultHandler, // PWM Generator 2
IntDefaultHandler, // Quadrature Encoder 0
IntDefaultHandler, // ADC Sequence 0
IntDefaultHandler, // ADC Sequence 1
IntDefaultHandler, // ADC Sequence 2
IntDefaultHandler, // ADC Sequence 3
IntDefaultHandler, // Watchdog timer
IntDefaultHandler, // Timer 0 subtimer A
IntDefaultHandler, // Timer 0 subtimer B
IntDefaultHandler, // Timer 1 subtimer A
IntDefaultHandler, // Timer 1 subtimer B
IntDefaultHandler, // Timer 2 subtimer A
IntDefaultHandler, // Timer 2 subtimer B
IntDefaultHandler, // Analog Comparator 0
IntDefaultHandler, // Analog Comparator 1
IntDefaultHandler, // Analog Comparator 2
IntDefaultHandler, // System Control (PLL, OSC, BO)
IntDefaultHandler, // FLASH Control
SW2_Handler, // GPIO Port F
IntDefaultHandler, // GPIO Port G
IntDefaultHandler, // GPIO Port H
IntDefaultHandler, // UART2 Rx and Tx
IntDefaultHandler, // SSI1 Rx and Tx
IntDefaultHandler, // Timer 3 subtimer A
IntDefaultHandler, // Timer 3 subtimer B
IntDefaultHandler, // I2C1 Master and Slave
IntDefaultHandler, // Quadrature Encoder 1
IntDefaultHandler, // CAN0
IntDefaultHandler, // CAN1
0, // Reserved
0, // Reserved
IntDefaultHandler, // Hibernate
IntDefaultHandler, // USB0
IntDefaultHandler, // PWM Generator 3
IntDefaultHandler, // uDMA Software Transfer
IntDefaultHandler, // uDMA Error
IntDefaultHandler, // ADC1 Sequence 0
IntDefaultHandler, // ADC1 Sequence 1
IntDefaultHandler, // ADC1 Sequence 2
IntDefaultHandler, // ADC1 Sequence 3
0, // Reserved
0, // Reserved
IntDefaultHandler, // GPIO Port J
IntDefaultHandler, // GPIO Port K
IntDefaultHandler, // GPIO Port L
IntDefaultHandler, // SSI2 Rx and Tx
IntDefaultHandler, // SSI3 Rx and Tx
IntDefaultHandler, // UART3 Rx and Tx
IntDefaultHandler, // UART4 Rx and Tx
IntDefaultHandler, // UART5 Rx and Tx
IntDefaultHandler, // UART6 Rx and Tx
IntDefaultHandler, // UART7 Rx and Tx
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // I2C2 Master and Slave
IntDefaultHandler, // I2C3 Master and Slave
IntDefaultHandler, // Timer 4 subtimer A
IntDefaultHandler, // Timer 4 subtimer B
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // Timer 5 subtimer A
IntDefaultHandler, // Timer 5 subtimer B
IntDefaultHandler, // Wide Timer 0 subtimer A
IntDefaultHandler, // Wide Timer 0 subtimer B
IntDefaultHandler, // Wide Timer 1 subtimer A
IntDefaultHandler, // Wide Timer 1 subtimer B
IntDefaultHandler, // Wide Timer 2 subtimer A
IntDefaultHandler, // Wide Timer 2 subtimer B
IntDefaultHandler, // Wide Timer 3 subtimer A
IntDefaultHandler, // Wide Timer 3 subtimer B
IntDefaultHandler, // Wide Timer 4 subtimer A
IntDefaultHandler, // Wide Timer 4 subtimer B
IntDefaultHandler, // Wide Timer 5 subtimer A
IntDefaultHandler, // Wide Timer 5 subtimer B
IntDefaultHandler, // FPU
0, // Reserved
0, // Reserved
IntDefaultHandler, // I2C4 Master and Slave
IntDefaultHandler, // I2C5 Master and Slave
IntDefaultHandler, // GPIO Port M
IntDefaultHandler, // GPIO Port N
IntDefaultHandler, // Quadrature Encoder 2
0, // Reserved
0, // Reserved
IntDefaultHandler, // GPIO Port P (Summary or P0)
IntDefaultHandler, // GPIO Port P1
IntDefaultHandler, // GPIO Port P2
IntDefaultHandler, // GPIO Port P3
IntDefaultHandler, // GPIO Port P4
IntDefaultHandler, // GPIO Port P5
IntDefaultHandler, // GPIO Port P6
IntDefaultHandler, // GPIO Port P7
IntDefaultHandler, // GPIO Port Q (Summary or Q0)
IntDefaultHandler, // GPIO Port Q1
IntDefaultHandler, // GPIO Port Q2
IntDefaultHandler, // GPIO Port Q3
IntDefaultHandler, // GPIO Port Q4
IntDefaultHandler, // GPIO Port Q5
IntDefaultHandler, // GPIO Port Q6
IntDefaultHandler, // GPIO Port Q7
IntDefaultHandler, // GPIO Port R
IntDefaultHandler, // GPIO Port S
IntDefaultHandler, // PWM 1 Generator 0
IntDefaultHandler, // PWM 1 Generator 1
IntDefaultHandler, // PWM 1 Generator 2
IntDefaultHandler, // PWM 1 Generator 3
IntDefaultHandler // PWM 1 Fault
};
//*****************************************************************************
//
// This is the code that gets called when the processor first starts execution
// following a reset event. Only the absolutely necessary set is performed,
// after which the application supplied entry() routine is called. Any fancy
// actions (such as making decisions based on the reset cause register, and
// resetting the bits in that register) are left solely in the hands of the
// application.
//
//*****************************************************************************
void
ResetISR(void)
{
//
// Jump to the CCS C initialization routine. This will enable the
// floating-point unit as well, so that does not need to be done here.
//
__asm(" .global _c_int00\n"
" b.w _c_int00");
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI. This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
static void
NmiSR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt. This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
FaultISR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives an unexpected
// interrupt. This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
IntDefaultHandler(void)
{
//
// Go into an infinite loop.
//
while(1)
{
}
}

1
SystickInterrupts/.ccsproject
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@ -14,4 +14,5 @@
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49
SystickInterrupts/.cproject
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11
SystickInterrupts/targetConfigs/Tiva TM4C123GH6PM.ccxml
View File

@ -1,13 +1,24 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<configurations XML_version="1.2" id="configurations_0">
<configuration XML_version="1.2" id="configuration_0">
<instance XML_version="1.2" desc="Stellaris In-Circuit Debug Interface" href="connections/Stellaris_ICDI_Connection.xml" id="Stellaris In-Circuit Debug Interface" xml="Stellaris_ICDI_Connection.xml" xmlpath="connections"/>
<connection XML_version="1.2" id="Stellaris In-Circuit Debug Interface">
<instance XML_version="1.2" href="drivers/stellaris_cs_dap.xml" id="drivers" xml="stellaris_cs_dap.xml" xmlpath="drivers"/>
<instance XML_version="1.2" href="drivers/stellaris_cortex_m4.xml" id="drivers" xml="stellaris_cortex_m4.xml" xmlpath="drivers"/>
<platform XML_version="1.2" id="platform_0">
<instance XML_version="1.2" desc="Tiva TM4C123GH6PM" href="devices/tm4c123gh6pm.xml" id="Tiva TM4C123GH6PM" xml="tm4c123gh6pm.xml" xmlpath="devices"/>
</platform>
</connection>
</configuration>
</configurations>