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other/adc_temperature_sensor: Cosmetics.

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This commit is contained in:
Uwe Hermann 2011-11-12 15:03:02 +01:00
parent 61ff27cfbe
commit cd259c6eb3
2 changed files with 7 additions and 7 deletions
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2
examples/stm32/f1/other/adc_temperature_sensor/README
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@ -3,7 +3,7 @@ README
------------------------------------------------------------------------------ ------------------------------------------------------------------------------
This example program sends some characters on USART1. This example program sends some characters on USART1.
Afterwards it read out the internal temperature sensor of the STM32 and Afterwards it read out the internal temperature sensor of the STM32 and
sends the value read out from the ADC to the USART1. sends the value read out from the ADC to the USART1.
The terminal settings for the receiving device/PC are 115200 8n1. The terminal settings for the receiving device/PC are 115200 8n1.

12
examples/stm32/f1/other/adc_temperature_sensor/adc.c
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@ -63,7 +63,7 @@ void adc_setup(void)
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN); rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make shure it doesn't run during config. */ /* Make sure the ADC doesn't run during config. */
adc_off(ADC1); adc_off(ADC1);
/* We configure everything for one single conversion. */ /* We configure everything for one single conversion. */
@ -96,12 +96,12 @@ void my_usart_print_int(u32 usart, int value)
usart_send(usart, '-'); usart_send(usart, '-');
value = value * -1; value = value * -1;
} }
while (value > 0) { while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10]; buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10; value /= 10;
} }
for (i = nr_digits; i >= 0; i--) for (i = nr_digits; i >= 0; i--)
usart_send(usart, buffer[i]); usart_send(usart, buffer[i]);
} }
@ -129,16 +129,16 @@ int main(void)
/* Select the channel we want to convert. 16=temperature_sensor. */ /* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16; channel_array[0] = 16;
adc_set_regular_sequence(ADC1, 1, channel_array); adc_set_regular_sequence(ADC1, 1, channel_array);
/* /*
* If the ADC_CR2_ON bit is already set -> setting it another time * If the ADC_CR2_ON bit is already set -> setting it another time
* starts the conversion. * starts the conversion.
*/ */
adc_on(ADC1); adc_on(ADC1);
/* Wait for end of conversion. */ /* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC)); while (!(ADC_SR(ADC1) & ADC_SR_EOC));
temperature = ADC_DR(ADC1); temperature = ADC_DR(ADC1);
/* /*