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tests/drivers_ds18: display negative numbers

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When `ds18_read` returns -2506, DS18 test print `Temperature [ºC]: -25.-6`
whereas it should print `Temperature [ºC]: -25.06. This commit fixes this
issue.
This commit is contained in:
Guillaume Gonnet 2019-05-16 20:22:02 +02:00
parent 1783b3da55
commit c9fa1d7503
1 changed files with 9 additions and 2 deletions
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11
tests/driver_ds18/main.c
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@ -48,9 +48,16 @@ int main(void)
/* Get temperature in centidegrees celsius */ /* Get temperature in centidegrees celsius */
if (ds18_get_temperature(&dev, &temperature) == DS18_OK) { if (ds18_get_temperature(&dev, &temperature) == DS18_OK) {
printf("Temperature [ºC]: %d.%d" bool negative = (temperature < 0);
if (negative) {
temperature = -temperature;
}
printf("Temperature [ºC]: %c%d.%02d"
"\n+-------------------------------------+\n", "\n+-------------------------------------+\n",
(temperature / 100), (int)(temperature % 100)); negative ? '-': ' ',
temperature / 100,
temperature % 100);
} }
else { else {
puts("[Error] Could not read temperature"); puts("[Error] Could not read temperature");