int airhumd_get(void *data)
{
static uint32_t initialized = 0;
if (!initialized) {
initialized = 1;
TM_AM2301_Init();
}
if (TM_AM2301_Read((TM_AM2301_Data_t *)data) == TM_AM2301_OK) {
/* Show on LCD */
printf("Humidity: %2.1f %%\nTemperature: %2.1f C", (float)(((TM_AM2301_Data_t *)data)->Hum / 10),
(float)(((TM_AM2301_Data_t *)data)->Temp / 10));
return 0;
}
return -1;
}
int main(void) {
TM_AM2301_Data_t data;
char str[50];
/* Initialize system */
SystemInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize LCD on F429-Discovery board */
TM_ILI9341_Init();
TM_ILI9341_Rotate(TM_ILI9341_Orientation_Portrait_2);
TM_ILI9341_Fill(ILI9341_COLOR_ORANGE);
TM_ILI9341_Puts(10, 10, "AM2301 (DHT21)\nsensor", &TM_Font_11x18, ILI9341_COLOR_BLACK, ILI9341_COLOR_ORANGE);
TM_ILI9341_Puts(90, 310, "stm32f4-discovery.com", &TM_Font_7x10, ILI9341_COLOR_BLACK, ILI9341_COLOR_ORANGE);
/* Initialize sensor */
TM_AM2301_Init();
/* Reset time */
TM_DELAY_SetTime(0);
while (1) {
/* Every 1 second */
if (TM_DELAY_Time() > 1000000) {
TM_DELAY_SetTime(0);
/* Data valid */
if (TM_AM2301_Read(&data) == TM_AM2301_OK) {
/* Show on LCD */
sprintf(str, "Humidity: %2.1f %%\nTemperature: %2.1f C", (float)data.Hum / 10, (float)data.Temp / 10);
TM_ILI9341_Puts(10, 100, str, &TM_Font_11x18, ILI9341_COLOR_BLACK, ILI9341_COLOR_ORANGE);
}
}
/* Do other stuff constantly */
}
}