Kansai Electric Power usage meter (Denki-yohou) for GainSpan Wi-Fi http://mbed.org/users/okini3939/notebook/denki-yohou/
Dependencies: mbed GSwifi (old)
7seg.cpp
- Committer:
- okini3939
- Date:
- 2012-10-17
- Revision:
- 2:8646918ffff2
- Parent:
- 1:beff52210994
- Child:
- 3:4bf32f60a770
File content as of revision 2:8646918ffff2:
#include "mbed.h" #include "7seg.h" #define LED_NUM 6 #define DIGITS_NUM 37 const int digits[DIGITS_NUM] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, // 0-9 0x77, 0x7c, 0x58, 0x5e, 0x79, 0x71, 0x3d, 0x74, 0x04, 0x1e, // a-j 0x76, 0x38, 0x54, 0x54, 0x5c, 0x73, 0x67, 0x50, 0x6d, 0x78, // k-t 0x1c, 0x1c, 0x1c, 0x76, 0x6e, 0x5b, 0x40}; // u-z,- static DigitalOut led_k[8] = {p34, p36, p26, p24, p23, p35, p30, p25}; static DigitalOut led_a[LED_NUM] = {p16, p17, p18, p19, p15, p14}; static Ticker tick; static int ledbuf[LED_NUM]; void leddisp () { static int n = 0; int i, bit; // led off for (i = 0; i < 8; i ++) { led_k[i] = 1; } led_a[n] = 1; // common off n ++; if (n >= LED_NUM) n = 0; // led on bit = 1; for (i = 0; i < 8; i ++) { led_k[i] = ledbuf[n] & bit ? 0 : 1; bit = bit << 1; } led_a[n] = 0; // common on } void writeled (int num, int dot, int mask, int zero) { if (((num >= 1000) || (zero & 0x08)) && (mask & 0x08)) { ledbuf[0] = digits[num / 1000 % 10]; } else { ledbuf[0] = 0; } if (((num >= 100) || (zero & 0x04)) && (mask & 0x04)) { ledbuf[1] = digits[(num / 100) % 10]; } else { ledbuf[1] = 0; } if (((num >= 10) || (zero & 0x02)) && (mask & 0x02)) { ledbuf[2] = digits[(num / 10) % 10]; } else { ledbuf[2] = 0; } if (mask & 0x01) { ledbuf[3] = digits[num % 10]; } else { ledbuf[3] = 0; } if (dot >= 1 && dot <= 4) { ledbuf[dot - 1] |= 0x80; } } void writeled5 (int n, int d, int f) { if (f) { ledbuf[n] = digits[d]; } else { ledbuf[n] = d; } } void initled () { int i; for (i = 0; i < LED_NUM; i ++) { led_a[i] = 1; ledbuf[i] = 0; } for (i = 0; i < 8; i ++) { led_k[i] = 1; } } void startled () { tick.attach_us(&leddisp, 2500); // 400Hz }