The parent page described the basic steps to setup the ARM toolchain on eclipse and gdb. In this tutorial we will go deep on the configuration of the ARM toolchain for the TI CC2538 platform.
Requirements
Download and install the following software
- Latest jlink software from segger (this tutorial used v4.74b).
Download the following files. Will be used during the project configuration.
Configuration
- Create a new project from Eclipse: Select File - New - C Project
- Choose ARM Cross Target Application - Empty Project
- Choose the ARM Windows (or Linux) GCC (GNUARM,WinARM)
- Select a name for the project
In the project properties, configure the project to use the arm-gnu toolchain as described in the parent page.
The special configuration for CC2538 is the following:
go to Linker settings and In General select the path to the linker file (downloaded previously)
Click OK to save the changes.
In your project folder structure add the downloaded files (linker file and startup file) and create a main program containing the following code:
#include <stdint.h>
#define GPIO_C_DIR 0x400DB400
#define GPIO_C_DATA 0x400DB000
#define HWREG(x) \
(*((volatile uint32_t *)(x)))
int main(void)
{
volatile uint32_t ui32LoopCount;
volatile uint32_t ui32LoopXV=0;
// Set direction output and initial value for PC2 and PC0
// Greed LED on PC2
// Red LED on PC0
HWREG(GPIO_C_DIR) |= 0x05;
HWREG(GPIO_C_DATA + (0x05 << 2)) = 0;
// Loop forever.
while(1)
{
// Turn on both LED's.
HWREG(GPIO_C_DATA + (0x05 << 2)) ^= 0x05;
// Delay for a bit
for(ui32LoopCount = 200000; ui32LoopCount > 0; ui32LoopCount--)
{
ui32LoopXV++;
}
}
}
Create a Debug Configuration using JTAG and GDB