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ds1624/ds1621: Stabilization and bug fixes

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* ds1621 datasheet is wrong for higher resolution, fixed
* ds1621 sometimes reset on bad (long) i2c bus, added autoreconfigure
* hotplug bug fixes
This commit is contained in:
Leonid Muravjev 2020-01-23 23:28:39 +03:00
parent 588f3ca0b2
commit b977c28435
1 changed files with 48 additions and 12 deletions
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54
tasmota/xsns_59_ds1624.ino
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@ -38,6 +38,9 @@
#define DS1621_COUNTER_REGISTER 0xA8 //exists on 1621 and 1624(undocumented)
#define DS1621_SLOPE_REGISTER 0xA9 //exists on 1624 and 1624(undocumented)
#define DS1621_CFG_1SHOT (1<<0)
#define DS1621_CFG_DONE (1<<7)
enum {
DS1624_TYPE_DS1624,
DS1624_TYPE_DS1621
@ -50,6 +53,8 @@ bool ds1624_init = false;
struct {
float value;
uint8_t type;
int errcnt;
int misscnt;
bool valid;
char name[9];
} ds1624_sns[DS1624_MAX_SENSORS];
@ -58,6 +63,17 @@ uint32_t DS1624_Idx2Addr(uint32_t idx) {
return 0x48 + idx;
}
int DS1624_Restart(uint8_t config, uint32_t idx) {
uint32_t addr = DS1624_Idx2Addr(idx);
if ((config & 1) == 1) {
config &= ~(DS1621_CFG_DONE|DS1621_CFG_1SHOT);
I2cWrite8(addr, DS1624_CONF_REGISTER, config); // 1shot off
delay(10); // by spec after writing
AddLog_P2(LOG_LEVEL_ERROR, "%s addr %x is reset, reconfig: %x", ds1624_sns[idx].name, addr, config);
}
I2cValidRead(addr, DS1624_START_REGISTER, 1);
}
void DS1624_HotPlugUp(uint32_t idx)
{
uint32_t addr = DS1624_Idx2Addr(idx);
@ -75,12 +91,9 @@ void DS1624_HotPlugUp(uint32_t idx)
I2cSetActiveFound(addr, ds1624_sns[idx].name);
ds1624_sns[idx].valid = true;
if ((config & 1) == 1) {
config &= 0xfe;
I2cWrite8(addr, DS1624_CONF_REGISTER, config); // 1show off
delay(10); // by spec after writing
}
I2cValidRead(addr, DS1624_START_REGISTER, 1); // FIXME 0 must read, but 0 isn't work for tasmota
ds1624_sns[idx].errcnt = 0;
ds1624_sns[idx].misscnt = 0;
DS1624_Restart(config,idx);
AddLog_P2(LOG_LEVEL_INFO, "Hot Plug %s addr %x config: %x", ds1624_sns[idx].name, addr, config);
}
}
@ -98,16 +111,37 @@ bool DS1624GetTemp(float *value, int idx)
{
uint32_t addr = DS1624_Idx2Addr(idx);
uint8_t config;
if (!I2cValidRead8(&config, addr, DS1624_CONF_REGISTER)) {
ds1624_sns[idx].misscnt++;
AddLog_P2(LOG_LEVEL_INFO, "%s device missing (errors: %i)", ds1624_sns[idx].name, ds1624_sns[idx].misscnt);
return false;
}
ds1624_sns[idx].misscnt=0;
if (config & (DS1621_CFG_1SHOT|DS1621_CFG_DONE)) {
ds1624_sns[idx].errcnt++;
AddLog_P2(LOG_LEVEL_INFO, "%s config error, restart... (errors: %i)", ds1624_sns[idx].name, ds1624_sns[idx].errcnt);
DS1624_Restart(config, idx);
return false;
}
uint16_t t;
if (!I2cValidRead16(&t, DS1624_Idx2Addr(idx), DS1624_TEMP_REGISTER)) { return false; }
if (ds1624_sns[idx].type == DS1624_TYPE_DS1624) {
*value = ((float)(int8_t)(t>>8)) + ((t>>4)&0xf)*0.0625;
if (ds1624_sns[idx].type == DS1624_TYPE_DS1621) { // Higher resolution
} else { //type == DS1624_TYPE_DS1621
// Datasheet for ds1621 is wrong for high resolution, real is:
*value = ((float)(int8_t)(t>>8));
uint8_t remain;
if (!I2cValidRead8(&remain, addr, DS1621_COUNTER_REGISTER)) { return true; }
uint8_t perc;
if (!I2cValidRead8(&perc, addr, DS1621_SLOPE_REGISTER)) { return true; }
*value += ((float)perc - (float)remain)/((float)perc) - 0.25;
float fix=(float)(perc - remain)/(float)perc;
*value+=fix;
}
ds1624_sns[idx].errcnt=0;
config &= ~(DS1621_CFG_DONE);
I2cWrite8(addr, DS1624_CONF_REGISTER, config);
return true;
}
@ -120,10 +154,12 @@ void DS1624HotPlugScan(void)
if (I2cActive(addr) && !ds1624_sns[idx].valid) {
continue; // is busy by another driver
}
if (!I2cValidRead16(&t, DS1624_Idx2Addr(idx), DS1624_TEMP_REGISTER)) {
if (ds1624_sns[idx].valid) {
if ((ds1624_sns[idx].misscnt>2)||(ds1624_sns[idx].errcnt>2)) {
DS1624_HotPlugDown(idx);
continue;
}
}
DS1624_HotPlugUp(idx);
}
}