commit ea3046037a1cd4f03c74f7f1ded0d61c55a3a7ac parent 743fe0c5e8cf9473e12ed94a9d64c78070f99ec7 Author: Martin Kloeckner <mjkloeckner@gmail.com> Date: Sun, 15 Mar 2026 22:12:14 -0300 add `DS18B20_SetResolution` function Diffstat:
| M | app/src/ds18b20.c | | | 28 | ++++++++++++++++++++++++++++ |
1 file changed, 28 insertions(+), 0 deletions(-) diff --git a/app/src/ds18b20.c b/app/src/ds18b20.c @@ -55,12 +55,40 @@ uint8_t DS18B20_Reset(void) return 0; } +void DS18B20_SetResolution(uint8_t resolution) +{ + uint8_t config; + + switch(resolution) + { + case 9: config = 0x1F; break; + case 10: config = 0x3F; break; + case 11: config = 0x5F; break; + case 12: config = 0x7F; break; + default: config = 0x7F; + } + + DS18B20_Reset(); + DS18B20_Write(0xCC); // send 'Skip ROM' command + DS18B20_Write(0x4E); // send 'write scratchpad' command + + DS18B20_Write(0x00); // TH + DS18B20_Write(0x00); // TL + DS18B20_Write(config); + + DS18B20_Reset(); + + DS18B20_Write(0xCC); // Skip ROM + DS18B20_Write(0x48); // Write scratchpad to EEPROM +} + void DS18B20_Init(void) { if (DS18B20_Reset() == 0) { LOGGER_INFO("Temperature sensor initialized successfully"); } + DS18B20_SetResolution(10); } void DS18B20_Write(uint8_t data)