PCF85063 RTC chip (#3873)
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
brogon
commit
a6deae8b32
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#include "pcf85063.h"
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#include "esphome/core/log.h"
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// Datasheet:
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// - https://datasheets.maximintegrated.com/en/ds/DS1307.pdf
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namespace esphome {
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namespace pcf85063 {
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static const char *const TAG = "pcf85063";
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void PCF85063Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up PCF85063...");
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if (!this->read_rtc_()) {
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this->mark_failed();
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}
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}
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void PCF85063Component::update() { this->read_time(); }
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void PCF85063Component::dump_config() {
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ESP_LOGCONFIG(TAG, "PCF85063:");
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LOG_I2C_DEVICE(this);
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with PCF85063 failed!");
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}
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ESP_LOGCONFIG(TAG, " Timezone: '%s'", this->timezone_.c_str());
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}
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float PCF85063Component::get_setup_priority() const { return setup_priority::DATA; }
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void PCF85063Component::read_time() {
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if (!this->read_rtc_()) {
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return;
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}
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if (pcf85063_.reg.osc_stop) {
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ESP_LOGW(TAG, "RTC halted, not syncing to system clock.");
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return;
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}
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time::ESPTime rtc_time{.second = uint8_t(pcf85063_.reg.second + 10 * pcf85063_.reg.second_10),
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.minute = uint8_t(pcf85063_.reg.minute + 10u * pcf85063_.reg.minute_10),
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.hour = uint8_t(pcf85063_.reg.hour + 10u * pcf85063_.reg.hour_10),
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.day_of_week = uint8_t(pcf85063_.reg.weekday),
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.day_of_month = uint8_t(pcf85063_.reg.day + 10u * pcf85063_.reg.day_10),
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.day_of_year = 1, // ignored by recalc_timestamp_utc(false)
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.month = uint8_t(pcf85063_.reg.month + 10u * pcf85063_.reg.month_10),
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.year = uint16_t(pcf85063_.reg.year + 10u * pcf85063_.reg.year_10 + 2000)};
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rtc_time.recalc_timestamp_utc(false);
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if (!rtc_time.is_valid()) {
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ESP_LOGE(TAG, "Invalid RTC time, not syncing to system clock.");
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return;
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}
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time::RealTimeClock::synchronize_epoch_(rtc_time.timestamp);
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}
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void PCF85063Component::write_time() {
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auto now = time::RealTimeClock::utcnow();
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if (!now.is_valid()) {
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ESP_LOGE(TAG, "Invalid system time, not syncing to RTC.");
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return;
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}
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pcf85063_.reg.year = (now.year - 2000) % 10;
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pcf85063_.reg.year_10 = (now.year - 2000) / 10 % 10;
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pcf85063_.reg.month = now.month % 10;
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pcf85063_.reg.month_10 = now.month / 10;
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pcf85063_.reg.day = now.day_of_month % 10;
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pcf85063_.reg.day_10 = now.day_of_month / 10;
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pcf85063_.reg.weekday = now.day_of_week;
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pcf85063_.reg.hour = now.hour % 10;
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pcf85063_.reg.hour_10 = now.hour / 10;
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pcf85063_.reg.minute = now.minute % 10;
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pcf85063_.reg.minute_10 = now.minute / 10;
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pcf85063_.reg.second = now.second % 10;
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pcf85063_.reg.second_10 = now.second / 10;
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pcf85063_.reg.osc_stop = false;
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this->write_rtc_();
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}
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bool PCF85063Component::read_rtc_() {
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if (!this->read_bytes(0, this->pcf85063_.raw, sizeof(this->pcf85063_.raw))) {
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ESP_LOGE(TAG, "Can't read I2C data.");
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return false;
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}
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ESP_LOGD(TAG, "Read %0u%0u:%0u%0u:%0u%0u 20%0u%0u-%0u%0u-%0u%0u OSC:%s CLKOUT:%0u", pcf85063_.reg.hour_10,
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pcf85063_.reg.hour, pcf85063_.reg.minute_10, pcf85063_.reg.minute, pcf85063_.reg.second_10,
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pcf85063_.reg.second, pcf85063_.reg.year_10, pcf85063_.reg.year, pcf85063_.reg.month_10, pcf85063_.reg.month,
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pcf85063_.reg.day_10, pcf85063_.reg.day, ONOFF(!pcf85063_.reg.osc_stop), pcf85063_.reg.clkout_control);
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return true;
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}
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bool PCF85063Component::write_rtc_() {
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if (!this->write_bytes(0, this->pcf85063_.raw, sizeof(this->pcf85063_.raw))) {
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ESP_LOGE(TAG, "Can't write I2C data.");
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return false;
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}
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ESP_LOGD(TAG, "Write %0u%0u:%0u%0u:%0u%0u 20%0u%0u-%0u%0u-%0u%0u OSC:%s CLKOUT:%0u", pcf85063_.reg.hour_10,
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pcf85063_.reg.hour, pcf85063_.reg.minute_10, pcf85063_.reg.minute, pcf85063_.reg.second_10,
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pcf85063_.reg.second, pcf85063_.reg.year_10, pcf85063_.reg.year, pcf85063_.reg.month_10, pcf85063_.reg.month,
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pcf85063_.reg.day_10, pcf85063_.reg.day, ONOFF(!pcf85063_.reg.osc_stop), pcf85063_.reg.clkout_control);
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return true;
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}
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} // namespace pcf85063
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} // namespace esphome
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#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/i2c/i2c.h"
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#include "esphome/components/time/real_time_clock.h"
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namespace esphome {
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namespace pcf85063 {
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class PCF85063Component : public time::RealTimeClock, public i2c::I2CDevice {
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public:
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void setup() override;
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void update() override;
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void dump_config() override;
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float get_setup_priority() const override;
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void read_time();
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void write_time();
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protected:
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bool read_rtc_();
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bool write_rtc_();
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union PCF85063Reg {
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struct {
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// Control_1 register
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bool cap_12pf : 1;
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bool am_pm : 1;
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bool correction_int_enable : 1;
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bool : 1;
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bool soft_reset : 1;
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bool stop : 1;
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bool : 1;
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bool ext_test : 1;
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// Control_2 register
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uint8_t clkout_control : 3;
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bool timer_flag : 1;
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bool halfminute_int : 1;
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bool minute_int : 1;
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bool alarm_flag : 1;
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bool alarm_int : 1;
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// Offset register
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uint8_t offset : 7;
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bool coarse_mode : 1;
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// nvRAM register
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uint8_t nvram : 8;
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// Seconds register
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uint8_t second : 4;
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uint8_t second_10 : 3;
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bool osc_stop : 1;
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// Minutes register
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uint8_t minute : 4;
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uint8_t minute_10 : 3;
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uint8_t : 1;
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// Hours register
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uint8_t hour : 4;
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uint8_t hour_10 : 2;
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uint8_t : 2;
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// Days register
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uint8_t day : 4;
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uint8_t day_10 : 2;
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uint8_t : 2;
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// Weekdays register
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uint8_t weekday : 3;
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uint8_t unused_3 : 5;
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// Months register
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uint8_t month : 4;
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uint8_t month_10 : 1;
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uint8_t : 3;
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// Years register
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uint8_t year : 4;
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uint8_t year_10 : 4;
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} reg;
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mutable uint8_t raw[sizeof(reg)];
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} pcf85063_;
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};
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template<typename... Ts> class WriteAction : public Action<Ts...>, public Parented<PCF85063Component> {
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public:
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void play(Ts... x) override { this->parent_->write_time(); }
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};
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template<typename... Ts> class ReadAction : public Action<Ts...>, public Parented<PCF85063Component> {
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public:
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void play(Ts... x) override { this->parent_->read_time(); }
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};
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} // namespace pcf85063
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} // namespace esphome
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@ -0,0 +1,60 @@
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import esphome.config_validation as cv
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import esphome.codegen as cg
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from esphome import automation
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from esphome.components import i2c, time
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from esphome.const import CONF_ID
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CODEOWNERS = ["@brogon"]
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DEPENDENCIES = ["i2c"]
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pcf85063_ns = cg.esphome_ns.namespace("pcf85063")
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PCF85063Component = pcf85063_ns.class_(
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"PCF85063Component", time.RealTimeClock, i2c.I2CDevice
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)
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WriteAction = pcf85063_ns.class_("WriteAction", automation.Action)
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ReadAction = pcf85063_ns.class_("ReadAction", automation.Action)
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CONFIG_SCHEMA = time.TIME_SCHEMA.extend(
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{
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cv.GenerateID(): cv.declare_id(PCF85063Component),
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}
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).extend(i2c.i2c_device_schema(0x51))
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@automation.register_action(
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"pcf85063.write_time",
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WriteAction,
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cv.Schema(
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{
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cv.GenerateID(): cv.use_id(PCF85063Component),
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}
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),
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)
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async def pcf85063_write_time_to_code(config, action_id, template_arg, args):
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var = cg.new_Pvariable(action_id, template_arg)
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await cg.register_parented(var, config[CONF_ID])
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return var
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@automation.register_action(
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"pcf85063.read_time",
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ReadAction,
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automation.maybe_simple_id(
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{
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cv.GenerateID(): cv.use_id(PCF85063Component),
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}
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),
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)
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async def pcf85063_read_time_to_code(config, action_id, template_arg, args):
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var = cg.new_Pvariable(action_id, template_arg)
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await cg.register_parented(var, config[CONF_ID])
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return var
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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await cg.register_component(var, config)
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await i2c.register_i2c_device(var, config)
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await time.register_time(var, config)
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