Posted on May 17, 2011 at 14:09
The IOE_Config() function configures the peripherals, this should be calledbefore calling other IOE... functions. Have a look through the code for this function for interrupt and I2C initialisation.
For reference, the code below works on my STM3210C, this is based on the example code.
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
uint8_t memsData;
char lcdLine[20];
uint32_t revid, devid;
uint16_t lpCnt; /* Setup the microcontroller system. Initialize the Embedded Flash Interface,
initialize the PLL and update the SystemFrequency variable. */
SystemInit();
/* SysTick end of count event each 10ms with input clock equal to 9 MHz (HCLK/8, default) */
SysTick_Config(SystemFrequency / 100);
/* Init Debug Trace functions */
#ifdef DEBUG_TRACE_ENABLED
initDefaultDebugTrace();
printf(''Sys Start OK
'');
#endif /* Initialize LEDs and push-buttons mounted on STM3210X-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
STM_EVAL_PBInit(Button_WAKEUP, BUTTON_MODE);
STM_EVAL_PBInit(Button_TAMPER, BUTTON_MODE);
STM_EVAL_PBInit(Button_KEY, BUTTON_MODE);
/* Initialize the LCD */
STM3210C_LCD_Init();
/* Clear the LCD */
LCD_Clear(Blue);
/* Set the LCD Back Color */
LCD_SetBackColor(Blue);
/* Set the LCD Text Color */
LCD_SetTextColor(White);
/* Configure the IO Expander */
if (IOE_Config() == IOE_OK)
{
LCD_DisplayStringLine(Line0, ''IO Expander OK'');
}
else
{
LCD_DisplayStringLine(Line0, ''IO Expander FAIL'');
LCD_DisplayStringLine(Line1, ''Please Restart board'');
while(1);
} /* Configure MEMS */
memsData = I2C_ReadDeviceRegister(MEMS_I2C_ADDR, MEMS_Who_Am_I);
if (memsData == MEMS_DEVICE_ID)
{
LCD_DisplayStringLine(Line1, ''MEMS comms OK'');
}
else
{
LCD_DisplayStringLine(Line1, ''MEMS comms FAIL'');
LCD_DisplayStringLine(Line2, ''Please Restart board'');
while(1);
}
/* Power up MEMS */
if (I2C_WriteDeviceRegister(MEMS_I2C_ADDR, MEMS_Ctrl_Reg1, 0x47) == IOE_OK)
{
LCD_DisplayStringLine(Line2, ''MEMS powerup OK'');
}
else
{
LCD_DisplayStringLine(Line2, ''MEMS powerup FAIL'');
LCD_DisplayStringLine(Line3, ''Please Restart board'');
while(1);
} revid = DBGMCU_GetREVID();
devid = DBGMCU_GetDEVID();
sprintf(lcdLine, ''Rev %d Dev %d '', revid, devid);
LCD_DisplayStringLine(Line9, (uint8_t*)lcdLine); /* Set the LCD Text Color */
LCD_SetTextColor(Cyan); /* Draw graph borders */
LCD_DrawRect(120, 120, 18, 120);
LCD_DrawRect(144, 120, 18, 120);
LCD_DrawRect(168, 120, 18, 120);
LCD_DrawLine(139, 60, 5, Vertical);
LCD_DrawLine(163, 60, 5, Vertical); LCD_DisplayStringLine(Line4, ''64=1G +/-2G''); /* Set the LCD Text Color */
LCD_SetTextColor(Green); #ifdef DEBUG_TRACE_ENABLED
printf(''LCD & MEMS initialised OK
'');
#endif lpCnt = 0; /* Main Loop */
while(1)
{
/* Clear old bar graph lines */
LCD_SetTextColor(Blue);
LCD_DrawLine( 121, (uint16_t)(60 - memsX/2), 16, Vertical);
LCD_DrawLine( 145, (uint16_t)(60 - memsY/2), 16, Vertical);
LCD_DrawLine( 169, (uint16_t)(60 - memsZ/2), 16, Vertical);
LCD_SetTextColor(Green); /* Read X */
memsX = (int8_t)(I2C_ReadDeviceRegister(MEMS_I2C_ADDR, MEMS_OutX));
sprintf(lcdLine, ''MEMS X %+2d '', memsX);
LCD_DisplayStringLine(Line5, (uint8_t*)lcdLine);
LCD_DrawLine( 121, (uint16_t)(60 - memsX/2), 16, Vertical); /* Read Y */
memsY = (int8_t)I2C_ReadDeviceRegister(MEMS_I2C_ADDR, MEMS_OutY);
sprintf(lcdLine, ''MEMS Y %+2d '', memsY);
LCD_DisplayStringLine(Line6, (uint8_t*)lcdLine);
LCD_DrawLine( 145, (uint16_t)(60 - memsY/2), 16, Vertical);
/* Read Z */
memsZ = (int8_t)I2C_ReadDeviceRegister(MEMS_I2C_ADDR, MEMS_OutZ);
sprintf(lcdLine, ''MEMS Z %+2d '', memsZ);
LCD_DisplayStringLine(Line7, (uint8_t*)lcdLine);
LCD_DrawLine( 169, (uint16_t)(60 - memsZ/2), 16, Vertical); /* Read Status Register */
memsData = I2C_ReadDeviceRegister(MEMS_I2C_ADDR, MEMS_Status_Reg);
sprintf(lcdLine, ''Status %X'', memsData);
LCD_DisplayStringLine(Line8, (uint8_t*)lcdLine); #ifdef DEBUG_TRACE_ENABLED
if ( (++lpCnt % 20) == 0 )
{
printf(''Cycle %d completed OK
'', lpCnt );
}
#endif /* 100mSec delay */
Delay(10);
}
}
