Temperature sensor

[ART_ME]

Hello.
I need help to read data from temperature sensor of STM32F103C8. The datasheet show: The temperature sensor is internally connected to the ADC12_IN16 input channel.
However, when I write:

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ADC_Set_Input_Channel(_ADC_CHANNEL_16) 
ADC1_Init()                                           
adc_result = ADC1_Get_Sample(16)

I see the error: 303 Identifier "_ADC_CHANNEL_12" was not declared"
But _ADC_CHANNEL_0......_ADC_CHANNEL_9 no such error.
How I can read temperature sensor (this data will send via the UART to PC)?

[lana.arsic]

Hi,

You can take a look in datasheet (on page 10):

http://www.st.com/content/ccc/resource/ ... 161566.pdf

STM32F103C8 has ADC with 10 channels.

You can take a look in LM35 example in the compiler, it is located in installation folder, for example in:

c:\Users\Public\Documents\Mikroelektronika\mikroC PRO for ARM\Examples\ST\Development Systems\EasyMx PRO v7 for STM32 ARM\LM35\

Best regards,
Lana

[ART_ME]

Dear Lana,

You're right

ADC_Set_Input_Channel
This routine is available only for MCUs with ADC module located on GPIO pins.

May be istead:

Code: Select all

ADC_Set_Input_Channel(_ADC_CHANNEL_16)
ADC1_Init()                                           
adc_result = ADC1_Get_Sample(16)

will work:

Code: Select all

ADC1_Read(16)