Diff: aqm0802.cpp

Revision:

0:f86833c58a5f

Child:

1:ab257f9b56d2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/aqm0802.cpp	Tue Jan 28 08:03:22 2020 +0000
@@ -0,0 +1,87 @@
+#include "aqm0802.h"
+
+aqm0802::aqm0802(PinName sda, PinName scl)
+    : i2c_(sda, scl)
+{
+    wait_ms(40);
+    // LCD initialize
+    cmd(0x39); // function set
+    cmd(0x14); // interval osc
+    cmd(0x70); // contrast Low
+    cmd(0x56); // contast High/icon/power
+    cmd(0x6C); // follower control
+    wait_ms(200);
+    cmd(0x38); // function set
+    cmd(0x0C); // Display On
+    cmd(0x01); // Clear Display
+    wait_ms(200);
+}
+
+void aqm0802::cmd(char x)
+{
+    char data[2];
+    data[0] = 0x00; // CO = 0,RS = 0
+    data[1] = x;
+    i2c_.write(AQCM0802_addr, data, 2);
+}
+
+void aqm0802::contdata(char x)
+{
+    char data[2];
+    data[0] = 0xC0; //0b11000000 CO = 1, RS = 1
+    data[1] = x;
+    i2c_.write(AQCM0802_addr, data, 2);
+}
+
+void aqm0802::lastdata(char x)
+{
+    char data[2];
+    data[0] = 0x40; //0b11000000 CO = 0, RS = 1
+    data[1] = x;
+    i2c_.write(AQCM0802_addr, data, 2);
+}
+
+void aqm0802::print(const char *s)
+{
+    while(*s) {
+    if (*(s + 1)) {
+        contdata(*s);
+    } else {
+        lastdata(*s);
+    }
+        s++;
+    }
+}
+
+void aqm0802::print(int num)
+{
+    char itoa[8];
+    sprintf(itoa, "%d", num);
+    print(itoa);
+}
+
+void aqm0802::setCursor(uint8_t x,uint8_t y)
+{
+    cmd(0x80 | (y*0x40 + x));
+}
+
+void aqm0802::setCG(int src,int dst,int len)
+{
+    cmd(0x38);
+    cmd(0x40 + dst);
+
+    for (int i = 0;i < len;i++) contdata(cg[src + i] * (src>=0));
+}
+
+void aqm0802::setContrast(uint8_t c)
+{
+    cmd(0x39);
+    cmd(0x70 | (c & 0x0f)); // contrast Low
+    cmd(0x5C | ((c >> 4) & 0x03)); // contast High/icon/power
+    cmd(0x38);
+}
+
+void aqm0802::clear()
+{
+    cmd(0x01);
+}
\ No newline at end of file