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Merge pull request #295 from sheinz/fix/ds18b20_negative_temp

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ds18b20 fix for temperature below zero
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Ruslan V. Uss 2016-11-26 04:25:18 +06:00 committed by GitHub
commit 4d00566421
1 changed files with 12 additions and 12 deletions
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extras/ds18b20/ds18b20.c
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@ -174,7 +174,7 @@ bool ds18b20_read_scratchpad(int pin, ds18b20_addr_t addr, uint8_t *buffer) {
float ds18b20_read_temperature(int pin, ds18b20_addr_t addr) { float ds18b20_read_temperature(int pin, ds18b20_addr_t addr) {
uint8_t scratchpad[8]; uint8_t scratchpad[8];
int temp; int16_t temp;
if (!ds18b20_read_scratchpad(pin, addr, scratchpad)) { if (!ds18b20_read_scratchpad(pin, addr, scratchpad)) {
return NAN; return NAN;