125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
#ifndef TIME_DS3231
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#define TIME_DS3231
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#include "../../io/SoftI2C.h"
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class DS3231 {
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static constexpr uint8_t ADDR7 = 0x68;
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static constexpr uint8_t REG_SECONDS = 0x00;
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static constexpr uint8_t REG_MINUTES = 0x01;
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static constexpr uint8_t REG_HOURS = 0x02;
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public:
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bool isPresent() {
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return i2c::query(ADDR7);
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}
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struct Time {
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uint8_t h;
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uint8_t m;
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uint8_t s;
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};
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struct Date {
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uint8_t d;
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uint8_t m;
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uint8_t y;
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};
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struct Res {
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Time time;
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Date date;
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};
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Res get() {
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uint8_t buf[8];
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readRegister(0x00, buf, 8);
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Res res;
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res.time.h = (((buf[2] & 0b00110000)>>4)*10) + (buf[2] & 0b1111);
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res.time.m = (((buf[1] & 0b01110000)>>4)*10) + (buf[1] & 0b1111);
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res.time.s = (((buf[0] & 0b01110000)>>4)*10) + (buf[0] & 0b1111);
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res.date.d = (((buf[4] & 0b00110000)>>4)*10) + (buf[4] & 0b1111);
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res.date.m = (((buf[5] & 0b00010000)>>4)*10) + (buf[5] & 0b1111);
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res.date.y = (((buf[6] & 0b11110000)>>4)*10) + (buf[6] & 0b1111);
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os_printf("%d %d %d \n", res.time.h, res.time.m, res.time.s);
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os_printf("%d %d %d \n", res.date.d, res.date.m, res.date.y);
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return res;
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}
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void setTime(uint8_t h, uint8_t m, uint8_t s) {
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uint8_t buf[3];
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buf[0] = ((s/10)<<4) + (s % 10);
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buf[1] = ((m/10)<<4) + (m % 10);
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buf[2] = ((h/10)<<4) + (h % 10);
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writeRegister(0x00, buf, 3);
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}
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void setDate(uint8_t d, uint8_t m, uint8_t y) {
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uint8_t buf[3];
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buf[0] = ((d/10)<<4) + (d % 10);
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buf[1] = ((m/10)<<4) + (m % 10);
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buf[2] = ((y/10)<<4) + (y % 10);
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writeRegister(0x04, buf, 3);
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}
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private:
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bool readRegister(const uint8_t addr, uint8_t* dst, const uint8_t len) {
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bool ok;
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// address the slave in write mode and select the first register to read
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ok = i2c::startWrite(ADDR7);
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if (!ok) {os_printf("failed start write\n"); return false;}
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ok = i2c::writeByteAndCheck(addr);
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if (!ok) {os_printf("failed to select register %d\n", addr); return false;}
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//i2c::stop();
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// address the slave in read mode and read [len] registers
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ok = i2c::startRead(ADDR7);
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if (!ok) {os_printf("failed start read\n"); return 0;}
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i2c::readBytes(dst, len);
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// done
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i2c::stop();
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return true;
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}
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bool writeRegister(const uint8_t addr, const uint8_t* src, const uint8_t len) {
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bool ok;
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// address the slave in write mode and select the first register to read
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ok = i2c::startWrite(ADDR7);
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if (!ok) {os_printf("failed start write\n"); return false;}
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ok = i2c::writeByteAndCheck(addr);
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if (!ok) {os_printf("failed to select register %d\n", addr); return false;}
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ok = i2c::writeBytesAndCheck(src, len);
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if (!ok) {os_printf("failed to write register contents \n"); return false;}
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// done
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i2c::stop();
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return true;
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}
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};
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#endif
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