many updates..

new sensors.. display.. led.. drawing.. stuff..

ext/time/DS3231.h

@@ -0,0 +1,124 @@
+#ifndef TIME_DS3231
+#define TIME_DS3231
+
+#include "../../io/SoftI2C.h"
+
+class DS3231 {
+
+	static constexpr uint8_t ADDR7 = 0x68;
+
+	static constexpr uint8_t REG_SECONDS = 0x00;
+	static constexpr uint8_t REG_MINUTES = 0x01;
+	static constexpr uint8_t REG_HOURS = 0x02;
+
+
+public:
+
+	bool isPresent() {
+		return i2c::query(ADDR7);
+	}
+
+	struct Time {
+		uint8_t h;
+		uint8_t m;
+		uint8_t s;
+	};
+	struct Date {
+		uint8_t d;
+		uint8_t m;
+		uint8_t y;
+	};
+
+	struct Res {
+		Time time;
+		Date date;
+	};
+
+	Res get() {
+
+		uint8_t buf[8];
+		readRegister(0x00, buf, 8);
+
+		Res res;
+
+		res.time.h = (((buf[2] & 0b00110000)>>4)*10) + (buf[2] & 0b1111);
+		res.time.m = (((buf[1] & 0b01110000)>>4)*10) + (buf[1] & 0b1111);
+		res.time.s = (((buf[0] & 0b01110000)>>4)*10) + (buf[0] & 0b1111);
+
+		res.date.d = (((buf[4] & 0b00110000)>>4)*10) + (buf[4] & 0b1111);
+		res.date.m = (((buf[5] & 0b00010000)>>4)*10) + (buf[5] & 0b1111);
+		res.date.y = (((buf[6] & 0b11110000)>>4)*10) + (buf[6] & 0b1111);
+
+		os_printf("%d %d %d \n", res.time.h, res.time.m, res.time.s);
+		os_printf("%d %d %d \n", res.date.d, res.date.m, res.date.y);
+
+		return res;
+
+	}
+
+	void setTime(uint8_t h, uint8_t m, uint8_t s) {
+
+		uint8_t buf[3];
+		buf[0] = ((s/10)<<4) + (s % 10);
+		buf[1] = ((m/10)<<4) + (m % 10);
+		buf[2] = ((h/10)<<4) + (h % 10);
+		writeRegister(0x00, buf, 3);
+
+	}
+
+	void setDate(uint8_t d, uint8_t m, uint8_t y) {
+
+		uint8_t buf[3];
+		buf[0] = ((d/10)<<4) + (d % 10);
+		buf[1] = ((m/10)<<4) + (m % 10);
+		buf[2] = ((y/10)<<4) + (y % 10);
+		writeRegister(0x04, buf, 3);
+
+	}
+
+private:
+
+	bool readRegister(const uint8_t addr, uint8_t* dst, const uint8_t len) {
+
+		bool ok;
+
+		// address the slave in write mode and select the first register to read
+		ok = i2c::startWrite(ADDR7);
+		if (!ok) {os_printf("failed start write\n"); return false;}
+		ok = i2c::writeByteAndCheck(addr);
+		if (!ok) {os_printf("failed to select register %d\n", addr); return false;}
+
+		//i2c::stop();
+
+		// address the slave in read mode and read [len] registers
+		ok = i2c::startRead(ADDR7);
+		if (!ok) {os_printf("failed start read\n"); return 0;}
+		i2c::readBytes(dst, len);
+
+		// done
+		i2c::stop();
+		return true;
+
+	}
+
+	bool writeRegister(const uint8_t addr, const uint8_t* src, const uint8_t len) {
+
+		bool ok;
+
+		// address the slave in write mode and select the first register to read
+		ok = i2c::startWrite(ADDR7);
+		if (!ok) {os_printf("failed start write\n"); return false;}
+		ok = i2c::writeByteAndCheck(addr);
+		if (!ok) {os_printf("failed to select register %d\n", addr); return false;}
+		ok = i2c::writeBytesAndCheck(src, len);
+		if (!ok) {os_printf("failed to write register contents \n"); return false;}
+
+		// done
+		i2c::stop();
+		return true;
+
+	}
+
+};
+
+#endif