{"id":173,"date":"2022-12-21T22:05:03","date_gmt":"2022-12-21T14:05:03","guid":{"rendered":"https:\/\/vm1.go2see.me\/?p=173"},"modified":"2022-12-23T12:25:54","modified_gmt":"2022-12-23T04:25:54","slug":"173","status":"publish","type":"post","link":"https:\/\/vm1.go2see.me\/?p=173","title":{"rendered":"micropython \u5728\u6e2c\u8a66\u67b6\u61c9\u7528\u7684\u529f\u80fd\u5eab\u6574\u7406"},"content":{"rendered":"<h1>micropython \u5728\u6e2c\u8a66\u67b6\u61c9\u7528\u7684\u529f\u80fd\u5eab\u6574\u7406<\/h1>\n<p>\u4e4b\u524d\u70ba\u4e86\u8a2d\u8a08\u67d0\u65b9\u6848\u7684\u91cf\u7522\u6e2c\u8a66\u5de5\u5177\uff0c\u4f7f\u7528 micropython + STM32 \uff0c\u7db2\u4e0a\u627e\u4e86\u8a31\u591a\u53ef\u4ee5\u61c9\u7528\u7684\u5de5\u5177\u5eab\uff0c\u5feb\u901f\u8a2d\u8a08\u4e86\u539f\u578b\u3002<\/p>\n<p>\u800c\u4e0a\u4f4d\u6a5f\u7684 prototype \u4e5f\u662f\u7528 python\u8a2d\u8a08\u7684 GUI\u6846\u67b6\uff0c\u4f7f\u7528 threading \u5eab\uff0c\u63a7\u5236\u4e0d\u540c\u7684 microPython \u6e2c\u8a66\u67b6\uff0c\u57f7\u884c\u4e0d\u540c\u7684\u5de5\u4f5c\u3002<\/p>\n<p>\u672c\u4f86\u53ea\u60f3\u7528python\u539f\u578b\u8a2d\u8a08\uff0c\u8b93\u8edf\u9ad4\u5de5\u7a0b\u5e2b\u7406\u89e3\u5404\u500b\u9805\u76ee\u9700\u6c42\uff0c\u4e26\u8207\u786c\u9ad4\u5de5\u7a0b\u5e2b\u78ba\u8a8d\u63a5\u53e3\u3002\u505a\u8457\u505a\u8457\uff0c\u9664\u4e86\u5f85\u6e2c\u7269\u76f8\u95dc\u7684API\uff0c\u5c45\u7136\u9084\u904b\u884c\u5f97\u6709\u6a21\u6709\u6a23\u7684\u3002\u3002\u3002<\/p>\n<p><span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">python \u771f\u662f\u4e0d\u932f\u7684\u5de5\u5177\uff0c\u96d6\u7136\u6162\u4e86\u4e9b\uff0c\u4f46\u53ef\u4ee5\u77ed\u6642\u9593\u7684\u5be6\u73fe\u60f3\u50cf\u7684\u8a2d\u8a08\u65b9\u6848\u539f\u578b\uff0c\u82e5\u7528C\/C++\u4f86\u5be6\u73fe\uff0c\u53ef\u80fd\u6703\u760b\u4e86\u3002<\/span><\/p>\n<p>\u627e\u4e86\u8a31\u591amicroPython\u7684\u5eab\u53ef\u4ee5\u5b8c\u6210\u4e0d\u540c\u7684\u6e2c\u8a66\u529f\u80fd\u3002\u9019\u88e1\u628a\u627e\u5230\u7684\u6e2c\u8a66\u61c9\u7528\u7684\u529f\u80fd\u5eab\u6574\u7406\u51fa\u4f86\uff0c\u65b9\u4fbf\u4ee5\u5f8c\u4e0d\u540c\u7684\u529f\u80fd\u61c9\u7528\u3002<br \/>\nmicropython \u63d0\u4f9b\u6709\u8db3\u5920\u597d\u7684\u5eab\uff0c\u8b93\u6211\u5011\u8f15\u9b06\u7684\u4f7f\u7528STM32\u7684\u5468\u908a\u3002<\/p>\n<p>\u9019\u88e1\u7528pyboard\u7684\u8173\u4f4d\u5b9a\u7fa9\u793a\u7bc4\uff0c\u53ef\u4ee5\u7528\u4e0d\u540c\u677f\u5b50\u7684\u5b9a\u7fa9\u66ff\u63db\u3002<\/p>\n<blockquote><p>\n  \u6ce8\u610f\uff1a\u6240\u6709\u786c\u4ef6\u62bd\u8c61\uff0c\u90fd\u6709deinit() \u6210\u5458\u51fd\u6570\uff0c\u7528\u6765\u5173\u95ed\u529f\u80fd\u4ee5\u53ca\u5bf9\u5e94\u7684Callback\u3002\u5c24\u5176\u662f Timer Callback\uff0c\u82e5\u4e0d\u53bb\u5173\u95ed\uff0c\u4f1a\u4e00\u76f4\u5b58\u5728\uff0c\u6709\u65f6\u4f1a\u9020\u6210\u56f0\u6270\u3002\n<\/p><\/blockquote>\n<h3>1. \u4fe1\u53f7\u53d1\u751f\u5668\uff1a<\/h3>\n<h4>A \u96d9\u901a\u9053\u4efb\u610f\u6ce2\u5f62<\/h4>\n<p>\u4f7f\u7528 STM32\u7684\u5169\u500b12bitDAC\u7576\u793a\u6ce2\u5668\u8f38\u51fa\u3002\u53ef\u4ee5\u8f38\u51fa\u4efb\u610f\u6ce2\u5f62\uff0c\u6211\u505a\u4e86128\u9ede\u7684 sin wave\u6ce2\u5f62\uff0c\u7531\u5169\u500btimer\uff087\u548c8\uff09\u63a7\u5236\u5169\u500b\u6ce2\u5f62\u7684\u8f38\u51fa\u983b\u7387\u3002\u6700\u9ad8\u53ef\u4ee5\u8f38\u51fa82k\u7684\u6b63\u5f26\u6ce2\u4fe1\u865f\u3002Timer6\u6253\u7b97\u505a\u793a\u6ce2\u5668\u8f38\u5165\u63a1\u6a23\u983b\u7387\uff0c\u907f\u958b\u3002<\/p>\n<pre><code class=\"language-python line-numbers\"># \u7531\u4e8e\u786c\u4ef6\u4e0a\u63a5\u8fd10v\u548c3.3v\u7535\u538b\u5230\u8fbe\u4e0d\u4e86\uff0c\u6ce2\u5f62\u4f1a\u626d\u66f2\uff0c\u632f\u5e45\u9700\u8981\u8c03\u6574\u5c0f\u4e9b\uff0c\u53d690%\u3002\n# 2048*0.9=1843\nimport math\nfrom array import array as arr\nbuff = arr('H', 2048 + int(1843 * math.sin(2 * math.pi * i \/ 128)) for i in range(128))\n\nfrom pyb import Timer, DAC\ndac1=DAC(1,bits=12)\ndac2=DAC(2,bits=12)\n#\u901a\u90531\u751f\u62101Khz\u768412\u4f4d\u7cbe\u5ea6\u6b63\u5f26\u6ce2\u3002\uff08\u91c7\u6837\u7387128kHz\uff0c\u4f7f\u7528Timer7\uff09\ndac1.write_timed(buff, Timer(7, freq=1000*128), mode=DAC.CIRCULAR)\n#\u901a\u90532\u751f\u6210440Hz\u6807\u51c6\u9891\u7387\u768412\u4f4d\u7cbe\u5ea6\u6b63\u5f26\u6ce2\u3002\uff08\u91c7\u6837\u738756.320kHz\uff0c\u4f7f\u7528Timer8\uff09\ndac2.write_timed(buff, Timer(8, freq=440*128), mode=DAC.CIRCULAR)\n<\/code><\/pre>\n<h4>B \u4e09\u89d2\u6ce2\/\u92f8\u9f52\u6ce2<\/h4>\n<p>\u5728\u901a\u90531 \uff08pin X5\uff09\u4ea7\u751f1khz\u4e09\u89d2\u6ce2\uff1a<\/p>\n<pre><code class=\"language-python line-numbers\">from pyb import DAC\ndac1=DAC(1,bits=12)\n# 12bit \u4e09\u89d2\u6ce2\u7684\u4e0a\u5347+\u4e0b\u964d\uff0c\u5171\u9700\u8981 4096*2=8192\u500b\u63a1\u6a23\u9ede\u3002\u983b\u7387\u8a2d\u5b9a\u70ba\u5e0c\u671b\u983b\u7387\u76848192\u500d\u3002\ndac1.triangle(1000*8192) #1k\u7684\u4e09\u89d2\u6ce2\n<\/code><\/pre>\n<p>\u4e09\u89d2\u6ce2\u53d1\u751f\u5668Lib\u53ea\u80fd\u7528\u9891\u7387\u53c2\u6570\uff0c\u4e0d\u80fd\u9009\u5176\u4ed6Timer\u3002\u5982\u679c\u4e24\u4e2a\u901a\u9053\u90fd\u8981\u7528\u4e09\u89d2\u6ce2\uff0c\u53ea\u80fd\u53d1\u76f8\u540c\u6a23\u5f0f\u7684\u6ce2\u5f62\u3002<\/p>\n<h3>2. \u793a\u6ce2\u5668\uff1a<\/h3>\n<p>\u4f7f\u7528 Timer6 \u505a\u63a1\u6a23\u983b\u7387\uff0c\u540c\u6642\u8b80\u53d6\u5169\u500bADC\u901a\u9053\u3002\u63a1\u7528\u963b\u585e\u5f0fIO\u8b80\u53d6\uff0c\u82e5\u540c\u6642\u8981\u4f7f\u7528\u4fe1\u865f\u767c\u751f\u5668\uff0c\u5148\u8a2d\u5b9a\u597d\u4fe1\u865f\u767c\u751f\u5668\uff0c\u5728\u505a\u793a\u6ce2\u5668\u7684\u8b80\u53d6\u3002<\/p>\n<pre><code class=\"language-python line-numbers\">from pyb import Pin, ADC, Timer\nfrom array import array as arr\nadc1 = ADC(Pin.board.X11)    # Create ADC's\nadc2 = ADC(Pin.board.X12)\nt6 = Timer(6, freq=120000)    # Create 120k samplerate timer\nrx1 = arr('H', (0 for i in range(400))) # ADC buffers of\nrx2 = arr('H', (0 for i in range(400))) # 100 16-bit words\n\n# read analog values into buffers at 100Hz (takes one second)\npyb.ADC.read_timed_multi((adc1, adc2), (rx1, rx2), t6)\n<\/code><\/pre>\n<h3>3. \u985e\u6bd4\u958b\u95dc\u4fe1\u865f\u5207\u63db\u898f\u5283<\/h3>\n<p>\u3010TBD\u3011\u9009\u7528\u811a\u4f4d\uff1a\u5269\u4f59\u7684GPIO\u3002\u4e4b\u540e\u6253\u5305\u9009\u62e9\u5207\u6362\u65b9\u5f0f\u3002\u4e3b\u8981\u662fstm32 F405\/407 \u677f\u5b50\u53ea\u6709\u4e24\u4e2aDAC\uff0c\u82e5\u9700\u8981\u5bf9\u591a\u4e2a\u6a21\u62df\u8f93\u5165\u3001\u97f3\u9891\u8f93\u5165\u505a\u6d4b\u8bd5\u6216\u6821\u6b63\uff0c\u4f1a\u9700\u8981\u4f7f\u7528\u5207\u6362\u5668\u3002\u4e00\u822c\u752874HC4067\u5f53\u5207\u6362\u5f00\u5173\u3002<\/p>\n<h3>4. \u5169\u8def UART\u5206\u5225\u8fde\u63a5\u5f85\u6e2c\u7269\u548c\u6a19\u6e96\u85cd\u82bd\u6a21\u7d44<\/h3>\n<p>micropython\u53ef\u4ee5\u9078\u64c7\u7de8\u8b6f BTStack \u6216 nimble \u505a\u85cd\u7259\u5de5\u4f5c\u3002\u85cd\u7259HCI-H4\u4ecb\u9762\u9700\u8981CTS\/RTS\u6d41\u63a7\u8173\u4f4d\u3002\u53e6\u5916\u9700\u8981GPIO\u63a7\u5236\u85cd\u7259\u6a21\u7d44\u7684 reset\u3002<br \/>\nUART\u8a2d\u5b9a\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><code>UART(2)<\/code> \u5f00\u542f\uff1a <code>(TX, RX, nRTS, nCTS) = (X3, X4, X2, X1) = (PA2, PA3, PA1, PA0)<\/code><\/li>\n<li><code>UART(3)<\/code> \u5f00\u542f\uff1a<code>(TX, RX, nRTS, nCTS) = (Y9, Y10, Y7, Y6) = (PB10, PB11, PB14, PB13)<\/code><\/li>\n<\/ul>\n<p>\u5e95\u4e0b\u662f\u901a\u8fc7UART2\u7684\u901a\u4fe1api\u8303\u4f8b\uff1a<\/p>\n<pre><code class=\"language-python line-numbers\">from pyb import UART\n# \u5b9a\u4e49 uart \u4e3a\u4e8c\u53f7 uart\uff0c\u53ef\u4ee5\u5148\u4e0d\u6253\u5f00\u901a\u9053\u3002\u4e5f\u53ef\u63a5\u7740\u653e uart.init() \u7684\u53c2\u6570\uff0c\u540c\u65f6\u6253\u5f00\u901a\u9053\u3002\nuart2 = UART(2) \n# \u521d\u59cb\u5316\u8bbe\u5b9a\uff0c\u53ea\u8981\u5305\u7387\u5373\u53ef\u5de5\u4f5c\uff0c\u5176\u4ed6\u53ef\u7528\u9884\u8bbe\u503c\n# uart.init (baud, bits=8, parity=None, stop=1, timeout=0, flow=0, \n#           timeout_char=0, read_buf_len=64)\nuart2.init(115200,flow=uart.CTS|uart.rts) # \u5b9a\u4e49\u4e86\u5305\u7387\uff0c\u5e76\u91c7\u7528CTS+RTS\u6d41\u63a7\uff0c\u5176\u4ed6\u4e3a\u9884\u8bbe\u503c\n\nuart2.write('hello')\nuart2.read(5)  # \u8fde\u7eed\u8bfb5\u4e2a\u5b57\u8282\uff08\u5728timeout\u65f6\u95f4\u5185\u8fde\u7eed\u8bfb\u6700\u591a5\u4e2a\u5b57\u8282\uff09\nuart2.readline() # \u5728timeout\u65f6\u95f4\u5185\uff0c\u8fde\u7eed\u8bfb\u4e00\u884c\u5b57\u4e32\u3002\uff08\u6362\u884c\u7b26\u7ed3\u675f\u5b57\u4e32\uff09\nuart2.any()    # \u67e5\u9605\u8f93\u5165\u662f\u5426\u6709\u5185\u5bb9\uff0c\u4f20\u56de\u503c\u662fbyte\u6570\u3002\nuart2.deinit() # \u5173\u95eduart\u901a\u9053\n<\/code><\/pre>\n<h3>5. \u4e3b\u673a\u63a5\u53e3<\/h3>\n<p>\u5171\u7528 microPython \u7684 USB REPL \u7aef\u53e3\u3002\u6703\u4f7f\u7528  <code>\uff08PA9, PA10, PA11, PA12\uff09<\/code> \u4e0d\u88ab\u5176\u4ed6GPIO\u6216\u529f\u80fd\u4f7f\u7528\u3002<\/p>\n<p>\u5728debug\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 Control+C \u4e2d\u65ad\u4e3b\u7a0b\u5f0f\uff0c\u8fdb\u5165REPL\uff0c\u518d\u7528 Control+D \u91cd\u7f6e\u5e73\u53f0\uff0c\u91cd\u65b0\u8fdb\u5165\u4e3b\u7a0b\u5f0f\u3002<\/p>\n<p>release code\u53ef\u4ee5\u5173\u95ed Control+C\uff0c\u4e0d\u8fdb\u5165REPL\u3002<\/p>\n<p>STM32 \u7684 microPython \u540c\u65f6\u63d0\u4f9b USB MSC\uff0c\u4e3b\u673a\u53ef\u4ee5\u76f4\u63a5\u5bf9\u677f\u4e0aSD\u5361\u64cd\u4f5c\u3002release code\u65f6\uff0c\u53ef\u4ee5\u5173\u95ed\u6216\u91cd\u5f00\u6b64\u529f\u80fd\uff0c\u4ee5\u907f\u514d\u8bef\u5165\u3002<\/p>\n<h3>6. \u6d4b\u8bd5\u67b6\u4eea\u5668\u7aef\u53e3<\/h3>\n<p>\u9810\u7559 UART6 \u7576\u5916\u63a5\u5100\u5668\u9023\u63a5\u53e3\u3002\u6700\u597d\u7528\u4e3b\u6a5f\u63a7\u5236\u5100\u5668\uff0c\u6709\u5100\u63a7\u7684 pyVISA \u5eab\u53ef\u4f7f\u7528\u3002<\/p>\n<h3>7. \u673a\u5668\u6309\u952e\u5f00\u5173<\/h3>\n<p>\u3010TBD\u3011\u9009\u7528\u811a\u4f4d\uff1a\u5269\u4f59\u7684GPIO\u3002<\/p>\n<ol>\n<li>\u542f\u52a8\u6d4b\u8bd5\u6216\u5176\u4ed6\u7528\u9014\u3002\u76ee\u524d\u677f\u4e0a\u5f00\u5173\uff1a <code>\uff08X17\uff09 = (B3)<\/code>\u3002<\/li>\n<li>\u6216\u9700\u8981\u5176\u4ed6\u6309\u952e\u5f00\u5173\uff0c\u53ef\u80fd\u7528 ADC\u5f53\u5f00\u5173\u3002<\/li>\n<\/ol>\n<h3>8. \u673a\u5668\u4e0a\u706f\u53f7<\/h3>\n<p>\u76ee\u524d\u677f\u4e0a\u67094\u4e2aLED\uff0cLED1\uff5e4\uff0c\u5bf9\u5e94\u5230MCU\u7684PA13\uff5ePA15\uff0c\u4ee5\u53caPB4\uff0c\u4e5f\u5c31\u662f\u677f\u4e0a\u7684P5\u3001P4\u3001P3\u3001P2\u811a\u4f4d\u3002<\/p>\n<p>LED1\uff0c2 \u53ea\u80fd\u4eae\u6216\u6697\uff0cLED3\uff0c4\u8fd8\u53ef\u4ee5\u63a7\u5236\u4eae\u5ea6\uff0c\u5206\u522b\u4f7f\u7528\u4e86Timer2\u548cTimer3 \u7684PWM\u8d44\u6e90\u3002<\/p>\n<p>\u53ef\u4ee5\u7528 Timer callback \u63a7\u5236 LED\u95ea\u70c1\uff0c\u7528\u4ee5\u8868\u793a\u4e0d\u540c\u7cfb\u7edf\u72b6\u6001\u3002<\/p>\n<pre><code class=\"language-python line-numbers\">from pyb import LED\n\nled = LED(1) # 1=red, 2=green, 3=yellow, 4=blue\nled.toggle()\nled.on()\nled.off()\n\n# LEDs 3 and 4 support PWM intensity (0-255)\nLED(4).intensity()    # get intensity\nLED(4).intensity(128) # set intensity to half\n<\/code><\/pre>\n<ul>\n<li>\u63a7\u5236 LED1 \u6bcf\u79d2\u95ea\u70c1\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-python line-numbers\">from pyb import Timer, LED\nt1 = Timer(1)\nt1.freq(0.5) # 0.5 Hz\nt1.callback(lambda t: LED(1).toggle())\n# \u53ef\u4ee5\u66f4\u6539\u9891\u7387\u4ee3\u8868\u4e0d\u540c\u72b6\u51b5\nt1.freq(3) # 3 Hz toggle\n\n<\/code><\/pre>\n<h3>9. \u901a\u77e5\u58f0\u97f3<\/h3>\n<p>\u5728\u70e7\u5f55\u5b8c\u6210\u6216\u6d4b\u8bd5\u5b8c\u6210\u53ef\u4ee5\u53d1\u751f\u901a\u77e5\u5b8c\u6210\u6216\u5931\u8d25\u3002\u5229\u7528 PWM \u4ea7\u751f\u9891\u7387\uff0c\u6676\u4f53\u7ba1\u653e\u5927\u540e\u63a8\u52a8\u8702\u9e23\u5668\u53d1\u58f0\u3002<\/p>\n<p>\u3010TBD\u3011\u9009\u7528\u811a\u4f4d\uff1a\u5269\u4f59\u7684GPIO\u3002<\/p>\n<p><img decoding=\"async\" src=\"\u4ea7\u6d4b\u7cfb\u7edf\u89c4\u5212\uff08\u4f7f\u7528microPython\u6784\u5efa\u6d4b\u8bd5\u67b6\uff09.assets\/image-20210430184346663.png\" alt=\"image-20210430184346663\" style=\"zoom:50%;\" \/><\/p>\n<h3>10. \u9891\u8c31\u5206\u6790\u4eea<\/h3>\n<p>\u76ee\u524d\u627e\u5230\u4e24\u79cd\u65b9\u6848\uff0c\u6027\u80fd\u548cSize\u8003\u91cf\uff0c\u76ee\u524d\u91c7\u7528\u7b2c\u4e8c\u79cd\u65b9\u6848\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u79cd\u662f ulib\uff0c\u7b80\u5316\u5b9e\u73b0\u4e86\u6807\u51c6\u7684 numpy \u548c scipy\uff0c\u9700\u8981\u91cd\u7f16micropython\u3002<br \/>\ncode\uff1a<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/github.com\/v923z\/micropython-ulab\">https:\/\/github.com\/v923z\/micropython-ulab<\/a><\/li>\n<li>\u7b2c\u4e8c\u79cd\u662f\u5feb\u901f\u5085\u7acb\u53f6\u8f6c\u6362\u7684 inline ARM Asm \u5b9e\u73b0\uff0c\u6027\u80fd\u4f18\u5f02\uff0c\u4e14\u9488\u5bf9STM32\u7684ADC\u63a5\u53e3\u5de5\u4f5c\u3002\u4f7f\u7528\u4e86\u6d6e\u70b9\u8fd0\u7b97\u3002\u672a\u6765\u4e5f\u8003\u8651\u81ea\u884c\u5d4c\u5165\u5230microPython\u7cfb\u7edf\u4e2d\u3002<br \/>\ncode\uff1a<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/github.com\/peterhinch\/micropython-fourier\">https:\/\/github.com\/peterhinch\/micropython-fourier<\/a><\/li>\n<\/ul>\n<h4>micropython-fourier LIB \u76f8\u5bb9\u6027<\/h4>\n<p>\u4f7f\u7528\u4e86\u6d6e\u70b9\u8fd0\u7b97\uff0cARM\u7684\u6c47\u7f16\u6307\u4ee4\u5b9e\u73b0\u3002<\/p>\n<ol>\n<li>BLACK_F407VE\n<ul>\n<li>config \u7684 RAM \u4e0d\u591f\uff0c\u8981\u5173\u95ed ETH_MII\u3002<\/li>\n<li>\u63a5\u811a\u4f7f\u7528\u539f\u59cbSTM\u547d\u540d\u3002<\/li>\n<li>dftadc \u7684 pin \u6ca1\u5b9a\u4e49pin &#8216;X7&#8217;\uff0c\u6539\u7528 pin  &#8216;PA6&#8217;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>WeAct_F411CE\n<ul>\n<li>F411 PA4~7\u7528\u65bc SPI Flash\uff0c\u4e0d\u80fd\u4f7f\u4f7f\u7528\u3002<\/li>\n<li>\u63a5\u811a\u4f7f\u7528\u539f\u59cbSTM\u547d\u540d\u3002<\/li>\n<li>F411\u6c92\u6709 DAC\uff0c\u53ef\u7528 PWM\u65b9\u6ce2\u66ff\u4ee3\uff0cpin \u6539 &#8216;PA0&#8217;\u3002\u65b9\u6ce2\u4f1a\u6709\u591a\u6b21\u4e09\u500d\u9891\u4fe1\u53f7\u3002<\/li>\n<li>F411 \u6c92\u6709 Timer6\uff0c\u51fd\u6570\u547c\u53eb\u8981\u6307\u5b9atimer=5\uff0cADC pin \u6539 &#8216;PA1&#8217;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u97f3\u9891\u4e0d\u9700\u8981\u592a\u590d\u6742\u5206\u6790\uff0c\u76ee\u524d\u91c7\u7528\u7b2c\u4e8c\u79cd\u65b9\u6848\uff0c\u4f7f\u7528\u5176DFTADC\u7c7b\u3002\u8a73\u7d30\u7528\u6cd5<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u53c3\u8003\u5b98\u7db2\u7684 <a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/github.com\/peterhinch\/micropython-fourier\/blob\/master\/README.md\">README.md<\/a> \u5167\u5bb9<\/span>\u3002<\/p>\n<p>DFTADC\u7684\u6784\u9020\u51fd\u6570\u7684\u53c2\u6570\u6709\uff1a<\/p>\n<ol>\n<li><code>length<\/code>\u5f3a\u5236\u7684\u3002\u6574\u6570\uff0c\u5b9a\u4e49\u8f6c\u6362\u957f\u5ea6\u3002<\/li>\n<li><code>adcpin<\/code>\u5f3a\u5236\u7684\u3002\u8fd9\u53ef\u80fd\u9700\u8981\u4e00\u4e2aADC\u5b9e\u4f8b\u6216\u80fd\u591f\u5b9a\u4e49\u4e00\u4e2a\u4f8b\u5982\u4e00\u4e2a\u5bf9\u8c61<code>'X7'<\/code>\u6216<code>pyb.Pin.board.X19<\/code>\u3002<\/li>\n<li><code>winfunc=None<\/code>\u7a97\u53e3\u529f\u80fd\u3002\u8bf7\u53c2\u9605README\u7b2c4.3\u8282\u3002<\/li>\n<li><code>timer=6<\/code>\u53ef\u4ee5\u63a5\u53d7<code>pyb.Timer<\/code>\u5b9e\u4f8b\u6216\u5b9a\u65f6\u5668\u53f7\u3002\u5b9a\u4e49\u7528\u4e8e\u6570\u636e\u91c7\u96c6\u7684\u8ba1\u65f6\u5668\u3002<\/li>\n<\/ol>\n<p>DFTADC \u7684\u6267\u884c\u51fd\u6570 run\u7684\u53c2\u6570\u6709<code>conversion<\/code>\uff0c<code>duration<\/code>\u4e24\u4e2a\uff0c\u6267\u884c\u65f6\u4f1a\u963b\u585e\u7cfb\u7edf\u3002\u51fd\u6570\u4f20\u56de\u503c\u4e3a\u6267\u884c\u603b\u8017\u65f6\uff08uS\uff09\u3002run \u7684\u53c2\u6570\u5b9a\u4e49\uff1a<\/p>\n<ul>\n<li><code>conversion<\/code>\u5fc5\u987b\u662f\u4e0b\u8868\u5b9a\u4e49\u7684\u8f6c\u6362\u7c7b\u578b\u9009\u9879\u4e4b\u4e00 \u3002<\/li>\n<li><code>duration<\/code>\u6574\u6570\u6216\u6d6e\u70b9\u6570\u3002\u91c7\u96c6\u6301\u7eed\u65f6\u95f4\uff08\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff09\u3002<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>\u53d8\u6362\u7c7b\u578b\u9009\u9879<\/th>\n<th>\u9009\u9879\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>FORWARD<\/td>\n<td>\u6b63\u5e38<strong>\u6b63\u5411<\/strong>\u53d8\u6362\u3002\u8bf7\u53c2\u9605README\u76844.4\u3002<\/td>\n<\/tr>\n<tr>\n<td>REVERSE<\/td>\n<td>\u6267\u884c<strong>\u53cd\u5411<\/strong>\u8f6c\u6362\u3002\u8bf7\u53c2\u9605README\u76844.5\u3002<\/td>\n<\/tr>\n<tr>\n<td>POLAR<\/td>\n<td><strong>\u6b63\u5411<\/strong>\u53d8\u6362\uff0c\u7ed3\u679c\u4e3a<strong>\u6781\u5750\u6807<\/strong>\u3002\u53c2\u89c1README\u76844.6\u3002<\/td>\n<\/tr>\n<tr>\n<td>DB<\/td>\n<td>\u6309\u7167<strong>POLAR<\/strong>\uff0c\u4f46\u5e45\u5ea6\u8f6c\u6362\u4e3a<strong>dB<\/strong>\u3002\u6700\u5927\u503c 0dB \u4ee3\u88681VRMS\uff0c12bit \u7cbe\u5ea6\u6700\u5c0f\u503c\u662f -80dB\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>\u4f8b\u5b50 0.1\u79d2\u5185\u91c7\u6837 \u2019X7\u2018 128\u6b21\uff0c\u5e76\u5bf9\u8d44\u6599\u505aDB\u5f62\u5f0f\u7684\u5085\u7acb\u53f6\u53d8\u6362\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-python line-numbers\">import array\nimport math\nimport pyb\nfrom dftclass import DFTADC, DB\n\ndef polarprint(objDFT):\n    print(\"Polar: mag (dB) phase (degs)\")\n    fstr = \"{:6d}{:8.2f}   {:8.2f}\"\n    for x in range(objDFT.length\/\/2):  # Only the first half is valid\n        print(fstr.format(x, objDFT.re[x], int(math.degrees(objDFT.im[x]))))\n\nmydft = DFTADC(128, 'X7')  # \u521d\u59cb\u5316\uff1a\u5bf9 'X7' \u505a DFT \u91c7\u6837 128\u70b9\uff08\u4f7f\u7528\u9884\u8bbeTimer6, \u65e0\u7a97\u51fd\u6570\uff09\nmydft.run(DB, 0.1) # \u91c7\u6837\u65f6\u95f4\u4e3a 0.1 \u79d2\u3002\u6362\u7b97\u4e3a\u9891\u7387\u7684dB\u503c\u3002\npolarprint(mydft)  # \u663e\u793a\u51fa\u91c7\u6837\u6570\u636e\n\n<\/code><\/pre>\n<h3>11. \u84dd\u7259\u6a21\u5757 GRFM<\/h3>\n<p>micropython \u84dd\u7259\u8fd8\u5728\u8bd5\u9a8c\u9636\u6bb5\uff0c\u4f46\u5df2\u7ecf\u6709\u5de5\u7a0b\u3002<\/p>\n<p>\u9884\u8bbe\u7684\u84dd\u7259 stack\u662f nimble \u7684BLE\u7248\u672c\uff0c\u53ef\u9009 BTStack \u652f\u6301\u7ecf\u5178\u84dd\u7259\uff0c\u4f46 BTstack \u5546\u7528\u9700\u8981\u53e6\u5916\u6388\u6743\u3002<\/p>\n<p>\u5728 PYB \u548c F407\u4e0a\u9700\u8981\u91cd\u65b0\u8bbe\u5b9a\u7f16\u8bd1 micropython\u3002\u53c2\u8003 PYBD_SF6\u7684\u9879\u76ee\u8c03\u6574\u3002<\/p>\n<h4>1 \u8bbe\u5b9a<\/h4>\n<p><code>mpconfigboard.mk<\/code> :\u5c3e\u7aef\u52a0\u4e0a<\/p>\n<p>\uff08\u5c1d\u8bd5\u9009btstack\uff09<\/p>\n<pre><code class=\"language-makefile line-numbers\"># cyue: \u6dfb\u52a0 bluetooth\uff0cnimBLE \u548c BTStack\u4e8c\u9009\u4e00\u3002\nMICROPY_PY_BLUETOOTH ?= 1\nMICROPY_BLUETOOTH_NIMBLE ?= 0\nMICROPY_BLUETOOTH_BTSTACK ?= 1\n#MICROPY_PY_LWIP = 1\n#MICROPY_PY_USSL = 1\n#MICROPY_SSL_MBEDTLS = 1\n#MICROPY_VFS_LFS2 = 1\n<\/code><\/pre>\n<p><code>mpconfigboard.h<\/code> :\u5c3e\u7aef\u52a0\u4e0a HCI port \u8bbe\u5b9a\uff0c\u91c7\u7528UART2\u3002<\/p>\n<pre><code class=\"language-c line-numbers\">\/\/ cyue: add Bluetooth config\n#define MICROPY_HW_BLE_UART_ID       (PYB_UART_2)\n#define MICROPY_HW_BLE_UART_BAUDRATE (115200)\n#define MICROPY_HW_BLE_UART_BAUDRATE_SECONDARY (1000000)       \n<\/code><\/pre>\n<h4>2. \u4fee\u6539\u7f16\u8bd1\u70e7\u5f55 microPython\uff08DevEBox\u4e3a\u4f8b\uff09<\/h4>\n<p>\u7f16\u8bd1\uff1a<\/p>\n<p><code>make BOARD=MCUDEV_DEVEBOX_F407VET6 -j<\/code><\/p>\n<p>\u67e5\u770b RAM\u548c Flash\u4f7f\u7528\u60c5\u51b5\uff1a<\/p>\n<pre><code class=\"language-sh line-numbers\">...\nLINK build-MCUDEV_DEVEBOX_F407VET6\/firmware.elf\n   text    data     bss     dec     hex filename\n 401504      56   39000  440560   6b8f0 build-MCUDEV_DEVEBOX_F407VET6\/firmware.elf\nGEN build-MCUDEV_DEVEBOX_F407VET6\/firmware0.bin\nGEN build-MCUDEV_DEVEBOX_F407VET6\/firmware1.bin\nGEN build-MCUDEV_DEVEBOX_F407VET6\/firmware.hex\nGEN build-MCUDEV_DEVEBOX_F407VET6\/firmware.dfu\n...\n<\/code><\/pre>\n<p>\u70e7\u5f55<\/p>\n<p><code>make BOARD=MCUDEV_DEVEBOX_F407VET6 deploy<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>micropython \u5728\u6e2c\u8a66\u67b6\u61c9\u7528\u7684\u529f\u80fd\u5eab\u6574\u7406 \u4e4b\u524d\u70ba\u4e86\u8a2d\u8a08\u67d0\u65b9\u6848\u7684\u91cf\u7522\u6e2c\u8a66\u5de5\u5177\uff0c\u4f7f\u7528 micropytho&#8230; &raquo; <a class=\"read-more-link\" href=\"https:\/\/vm1.go2see.me\/?p=173\">\u95b1\u8b80\u5168\u6587<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,8],"tags":[],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-embedded","category-miropython"],"_links":{"self":[{"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/posts\/173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=173"}],"version-history":[{"count":20,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/posts\/173\/revisions"}],"predecessor-version":[{"id":175,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=\/wp\/v2\/posts\/173\/revisions\/175"}],"wp:attachment":[{"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vm1.go2see.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}