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Simple 5x7 Led Matrix and numeric glyph test
/*
5x7test.cpp --- led matrix example
P1.0 - P1.4 .. low to high pins for columns
P2.0 - P2.6 .. low to high pins for rows
This example code is in the public domain.
*/
#define F_CPU 16000000
#include <fabooh.h>
#include <fabooh.ipp>
#include <DigitalIO.ipp>
using namespace fabooh;
const uint8_t rowPins[] = { 8, 9, 10, 11, 12, 13, 14 };
void setup() {
int n = 0;
for (n = 0; n < 6; ++n) {
pinMode(n, OUTPUT);
digitalWrite(n, HIGH);
}
for (n = 0; n < 7; ++n) {
pinMode(rowPins[n], OUTPUT);
digitalWrite(rowPins[n], LOW);
}
P2SEL &= ~(BIT6|BIT7);
}
// 5x7 numeric characters from X11
// note we only have 7 rows per but we pad to 8 so
// the code runs faster
const uint8_t glyphs[] = {
//0030:20505050502000
0x00, 0x2, 0x5, 0x5, 0x5, 0x5, 0x2,0,
//0031:20602020207000
0x0, 0x2, 0x6, 0x2, 0x2, 0x2, 0x7, 0,
//0032:6090102040F000
0x0, 0x6, 0x9, 0x1, 0x2, 0x4, 0xF, 0,
//0033:F0106010906000
0x0, 0xF, 0x1, 0x6, 0x1, 0x9, 0x6, 0,
//0034:2060A0F0202000
0x0, 0x2, 0x6, 0xA, 0xF, 0x2, 0x2, 0,
//0035:F080E010906000
0x0, 0xF, 0x8, 0xE, 0x1, 0x9, 0x6, 0,
//0036:6080E090906000
0x0, 0x6, 0x8, 0xE, 0x9, 0x9, 0x6, 0,
//0037:F0102020404000
0x0, 0xF, 0x1, 0x2, 0x2, 0x4, 0x4, 0,
//0038:60906090906000
0x0, 0x6, 0x9, 0x6, 0x9, 0x9, 0x6, 0,
//0039:60909070106000
0x0, 0x6, 0x9, 0x9, 0x7, 0x1, 0x6, 0,
};
void loop() {
int n, j;
int num = 9;
unsigned long nextTime = millis() + 250;
while (true) {
for (n = 0; n < 7; ++n) {
digitalWrite(rowPins[n], HIGH); // set the LED on
// toggle the columns values for each row
// driving the column pin low lets the current flow
// from the row pin, we have cathode columns and anode rows
P1OUT &= ~glyphs[ (num * 8) + n ];
__delay_cycles(32653); // 1/7th /70Hz when running at 16Mhz
P1OUT |= 0x1F;
digitalWrite(rowPins[n], LOW); // set the LED on
}
// countdown every 250 ms
if (millis() > nextTime) {
nextTime = millis() + 250;
if (--num < 0)
num = 9;
}
}
}
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