ST STM32F0 Series Application Note

7.2.6 STM32F072B-DISCO software basic algorythm
The user needs now to write the main application loop.
Example to show keys usage instead of slider usage.
• Open your IDE and in main.c file add the following lines:
/* USER CODE BEGIN 3 */
extern TSL_LinRot_T MyLinRots[];
static uint32_t cnt=0;
tsl_user_status_t status = TSL_USER_STATUS_BUSY;
status = tsl_user_Exec();
if(TSL_USER_STATUS_BUSY == status)
{
// Nothing to do
if(cnt++%50==0){
HAL_GPIO_TogglePin(LD3_GPIO_Port, LD3_Pin);
}
HAL_Delay(1);
}
else
{
if(MyLinRots[0].p_Data->StateId == TSL_STATEID_DETECT)
{
//TSLPRM_LINROT_RESOLUTION
if(MyLinRots[0].p_Data->Position >= 5 && MyLinRots[0].p_Data->Position < 50)
{
HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_Pin, GPIO_PIN_RESET);
}
if(MyLinRots[0].p_Data->Position >= 50 && MyLinRots[0].p_Data->Position < 80)
{
HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_Pin, GPIO_PIN_RESET);
}
if(MyLinRots[0].p_Data->Position >= 80 && MyLinRots[0].p_Data->Position < 120)
{
HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_Pin, GPIO_PIN_RESET);
}
}
else //if(MyLinRots[0].p_Data->StateId == TSL_STATEID_RELEASE)
{
HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_Pin, GPIO_PIN_RESET);
}
}
}
/* USER CODE END 3 */
Take care of ST-Link setup, see Figure 38. STM32F072B-DISCO setup.
AN5105
Discovery board: STM32F072B-DISCO
AN5105 - Rev 1
page 34/52

ST STM32F0 Series Specifications

General

Brand	ST
Model	STM32F0 Series
Category	Microcontrollers
Language	English