Zander671/rpi4b-temp-humidity
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Show loading if temp hasn't yet been read

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This commit is contained in:
Alexander Rosenberg 2024-04-13 15:09:05 -07:00
parent 8f4fd1958d
commit da9a2acf4e
Signed by: school-rpi4
GPG Key ID: 5CCFC80B0B47B04B
2 changed files with 5 additions and 2 deletions
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3
src/main.c
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@ -69,7 +69,8 @@ void start_update_thread(pthread_t *thread);
// cross thread variables
sqlite3 *DATABASE;
pthread_mutex_t STAT_MUTEX;
uint32_t LAST_TEMP, LAST_HUMID;
// these values mean that we haven't yet read the temperature
uint32_t LAST_TEMP = UINT32_MAX - 1, LAST_HUMID = UINT32_MAX - 1;
_Atomic bool RUNNING = true;
/*
* Lock the cross thread variables above.

4
src/ui/screen.c
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@ -151,7 +151,9 @@ static bool stats_screen_dispatch(StatsScreen *screen, SensorState *state) {
char buff[17];
int cur_len;
if (state->temp == UINT32_MAX || state->humid == UINT32_MAX) {
cur_len = snprintf(buff, sizeof(buff), "ERROR! ");
cur_len = snprintf(buff, sizeof(buff), "ERROR! ");
} else if (state->temp == UINT_MAX - 1 || state->humid == UINT32_MAX - 1) {
cur_len = snprintf(buff, sizeof(buff), "LOADING! ");
} else {
cur_len = snprintf(buff, sizeof(buff), "%-4.1f%c %3" PRIu32 "%% ",
convert_temperature(state->temp),