I have worked with a lot of different MCU (include one from TI - F28M35). And one week ago I got board with TSM320DM648 . It's my first DSP. I read documentation, watched tutorials... and I still don't know how to start first program blink LED (without RTOS). I did like in tutorial:
-create new project for DM648
-paste main.c from solution archive.
- change include files from C6748 to my DSP. Included files I got from SDK for DM648
Also I tried different examples, and everywhere a lot of errors.
For instance I've next main.c:
#include <stdio.h>
#include <c6x.h>
#include <soc.h>
#include <cslr_gpio.h>
#include <cslr_sys.h>
#include <cslr_psc.h>
//-------------------------------------------------------
// PROTOTYPES
//-------------------------------------------------------
void hardware_init(void);
void ledToggle (void);
void gpioPowerOn(void);
void delay (void);
//-------------------------------------------------------
// Globals
//-------------------------------------------------------
volatile int16_t i16ToggleCount = 0; // keep track of # LED toggles
// sys config registers overlay
CSL_SyscfgRegsOvly sysRegs = (CSL_SyscfgRegsOvly)(CSL_SYSCFG_0_REGS);
// Psc register overlay
CSL_PscRegsOvly psc1Regs = (CSL_PscRegsOvly)(CSL_PSC_1_REGS);
// Gpio register overlay
CSL_GpioRegsOvly gpioRegs = (CSL_GpioRegsOvly)(CSL_GPIO_0_REGS);
//---------------------------------------------------------------------------
// main()
//---------------------------------------------------------------------------
void main(void)
{
hardware_init(); // init hardware via Xware
while(1) // forever loop
{
ledToggle(); // toggle LED
delay(8100000); // create a delay of ~1/4sec
i16ToggleCount += 1; // keep track of #toggles
}
}
//-----------------------------------------------------------------------------
// hardware_init()
//-----------------------------------------------------------------------------
void hardware_init(void) //called by main
{
// PINMUX SETUP ---------------------------------------------
// Key to be written to enable the pin mux registers for write
sysRegs->KICK0R = 0x83e70b13;
sysRegs->KICK1R = 0x95A4F1E0;
// Enable the pinmux for the GPIO bank 0 pin 9 (tied to LED on LCDK)
sysRegs->PINMUX0 = ((CSL_SYSCFG_PINMUX0_PINMUX0_27_24_GPIO0_9)
<< (CSL_SYSCFG_PINMUX0_PINMUX0_27_24_SHIFT));
// GPIO SETUP ---------------------------------------------
// First, enable the GPIO Module in the PSC
gpioPowerOn();
// Configure GPIO0_9 (GPIO0_9_PIN) as an output
CSL_FINS(gpioRegs->BANK[0].DIR,GPIO_DIR_DIR9,0);
}
//-----------------------------------------------------------------------------
// ledToggle() ISR (called by BIOS Hwi, see app.cfg)
//-----------------------------------------------------------------------------
void ledToggle(void) //called by main
{
static Uint32 LED_state = 0; // used to toggle LED state
if (LED_state == 1) // if LED_state is "1" - ON, turn LED ON via GPIO
{
CSL_FINS(gpioRegs->BANK[0].OUT_DATA,GPIO_OUT_DATA_OUT9,1);
}
else // LED_state is "0" - OFF, turn LED OFF via GPIO
{
CSL_FINS(gpioRegs->BANK[0].OUT_DATA,GPIO_OUT_DATA_OUT9,0);
}
LED_state ^= 1; // toggle LED state
}
void delay(Uint32 count)
{
volatile Uint32 tempCount = 0;
for (tempCount = 0; tempCount < count; tempCount++)
{
/* dummy loop to wait for some time */
}
}
void gpioPowerOn(void)
{
volatile Uint32 pscTimeoutCount = 10240u;
Uint32 temp = 0;
// power on GPIO module in PSC & enable GPIO module
psc1Regs->MDCTL[CSL_PSC_GPIO] = ((psc1Regs->MDCTL[CSL_PSC_GPIO]
& 0xFFFFFFE0)
| CSL_PSC_MDSTAT_STATE_ENABLE);
// Kick start the Enable command
temp = psc1Regs->PTCMD;
temp = ((temp & CSL_PSC_PTCMD_GO0_MASK)
| (CSL_PSC_PTCMD_GO0_SET << CSL_PSC_PTCMD_GO0_SHIFT));
psc1Regs->PTCMD |= temp;
// Delay enough time for power state transition to occur (status not checked, this is the defn of HOPE)
while (((psc1Regs->PTSTAT & (CSL_PSC_PTSTAT_GOSTAT0_IN_TRANSITION)) != 0)
&& (pscTimeoutCount>0))
{
pscTimeoutCount--;
}
}
And I have next errors:
Description Resource Path Location Type
#137 struct "<unnamed>" has no field "BANK" main.c /Test1 line 92 C/C++ Problem
Description Resource Path Location Type
#20 identifier "CSL_GPIO_DIR_DIR9_MASK" is undefined main.c /Test1 line 92 C/C++ Problem
Description Resource Path Location Type
#20 identifier "CSL_GPIO_OUT_DATA_OUT9_MASK" is undefined main.c /Test1 line 107 C/C++ Problem
etc.
After one week work with DM648 I'm very upset with this DSP. A lot of information about it. But there isn't (or very difficult to find) information how to start, how make start point to work with DM648 =(
