Created
April 16, 2016 06:43
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生成单片机数码管显示数字对应的针脚16进制数值
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// 生成单片机数码管显示数字对应的针脚16进制数值 | |
var NumCodeMap = [ | |
// 0 | |
['a', 'b', 'c', 'd', 'e', 'f'], | |
// 1 | |
['b', 'c'], | |
// 2 | |
['a', 'b', 'd', 'e', 'g'], | |
// 3 | |
['a', 'b', 'c', 'd', 'g'], | |
// 4 | |
['b', 'c', 'f', 'g'], | |
// 5 | |
['a', 'c', 'd', 'f', 'g'], | |
// 6 | |
['a', 'c', 'd', 'e', 'f', 'g'], | |
// 7 | |
['a', 'b', 'c'], | |
// 8 | |
['a', 'b', 'c', 'd', 'e', 'f', 'g'], | |
// 9 | |
['a', 'b', 'c', 'd', 'f', 'g'], | |
]; | |
function sigma(numCode) { | |
var digCode = ['a', 'b', 'c', 'd', 'e', 'f', 'g'].map(function (item) { | |
return +(numCode.indexOf(item) > -1); | |
}); | |
return parseInt(digCode.reverse().join(''), 2).toString(16); | |
} | |
function wrapHex(num) { | |
return '0x' + (num.length < 2 ? '0' : '') + num; | |
} | |
function get(num) { | |
if (num >= 0 && num <= 9) { | |
num = parseInt(num); | |
var hex = sigma(NumCodeMap[num]); | |
return wrapHex(hex); | |
} | |
return -1; | |
} | |
// console.log( get( 0 ) ); | |
// '0123456789'.split('').map(function(item){ return get(item);}) | |
// ["0x3f", "0x06", "0x5b", "0x4f", "0x66", "0x6d", "0x7d", "0x07", "0x7f", "0x6f"] |
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