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Added error-checking in onewire routines

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This commit is contained in:
Alex Stewart 2016-03-17 13:36:31 -07:00
parent a2b9d688ea
commit 9b49b426f6
2 changed files with 63 additions and 35 deletions
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10
extras/onewire/onewire.h
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@ -57,14 +57,16 @@ void onewire_skip_rom(int pin);
// resistor to pull the line high when not driven low. If you need strong
// power after the write (e.g. DS18B20 in parasite power mode) then call
// onewire_power() after this is complete to actively drive the line high.
void onewire_write(int pin, uint8_t v);
// Returns true if successful, false on error.
bool onewire_write(int pin, uint8_t v);
void onewire_write_bytes(int pin, const uint8_t *buf, size_t count);
bool onewire_write_bytes(int pin, const uint8_t *buf, size_t count);
// Read a byte.
uint8_t onewire_read(int pin);
// Returns the read byte on success, negative value on error.
int onewire_read(int pin);
void onewire_read_bytes(int pin, uint8_t *buf, size_t count);
bool onewire_read_bytes(int pin, uint8_t *buf, size_t count);
// Actively drive the bus high to provide extra power for certain operations of
// parasitically-powered devices.