【正文】 接收電路由無(wú)線(xiàn)傳輸模塊 nRF24L0鼠標(biāo)專(zhuān)用通信芯片 HT82M98A、 USB 端口及其他外圍電路組成。 圖 24 主機(jī)端信號(hào)接收系統(tǒng)電路原理圖 其中， USB端口為 HT82M98A提供 5 V的電源，無(wú)線(xiàn)鼠標(biāo)信號(hào)接收電路中， 其他芯片使用的電源由HT82M98A自帶的電壓輸出端口 V33O 提供， 供電電壓為 V。 HT82M98A 的端口USBD+/CLK 連接 USB 數(shù)據(jù)正端； USBD/DATA連接 USB 數(shù)據(jù)負(fù)端。 Z Z2 表示鼠標(biāo)中間滾輪轉(zhuǎn)動(dòng)的信號(hào)數(shù)據(jù)； M、 R、 L表示鼠標(biāo)的左、中、右鍵按下時(shí)的數(shù)據(jù)； OSC1 、 OSC2 外接 6 MHz 晶振； RESET 表示復(fù)位輸入端， 啟動(dòng)時(shí)硬件自動(dòng)復(fù)位。因?yàn)?ADXL345 為 16 位數(shù)據(jù)格式，從數(shù)據(jù)寄存器中獲取加速度數(shù)據(jù)后，用戶(hù)必須對(duì)數(shù)據(jù)進(jìn)行重建。 dis_data=(BUF[3]8)+BUF[2]。 temp=(float)dis_data*。 HT82M98A 鼠標(biāo)控制器程序設(shè)計(jì) HT82M98A的 Z Z Y Y X X1分別與單片機(jī)的 I/O口相連，這 6個(gè) I/O口 輸出高低電平狀態(tài)使鼠標(biāo)的光標(biāo)移動(dòng)，這些移動(dòng)的序列構(gòu)成一個(gè)狀態(tài)機(jī)，向 X X2輸出圖 25的波形時(shí)可以得到如下信息： 圖 24 X1/X2的狀態(tài)機(jī)輸入 在Ｃ語(yǔ)言程序中用 positive a和 positive b代表上面的波形。假設(shè)獲取 X 的移動(dòng)值為 50，則光標(biāo)需要移動(dòng) 50個(gè)單位長(zhǎng)度，移動(dòng)過(guò)程如下： Initialise_state(void)函數(shù)用于初始化狀態(tài)機(jī)： Shifxa=positivea。//102 Shift=0。判斷 1次代表移動(dòng)一個(gè)像素，然后 X 的值減 1； Shifxa和 Shifxb向左移一位，用于檢測(cè)下一個(gè)狀態(tài)值， Shifxa加 1代表向左移了 1位，為 8意味著Shifxa向左移了 8位。 nRF24L01 無(wú)線(xiàn) 模塊程序設(shè)計(jì) 進(jìn)行數(shù)據(jù)傳輸時(shí)，發(fā)送方將按照無(wú)線(xiàn)通信協(xié)議封裝后的數(shù)據(jù)存入發(fā)送數(shù)據(jù)緩沖隊(duì)列，啟動(dòng)發(fā)送，發(fā)送完成后，發(fā)送方自動(dòng)轉(zhuǎn)入接收模式，準(zhǔn)備接收應(yīng)答信號(hào)。接收方不斷檢測(cè)射頻信號(hào)，發(fā)現(xiàn)有效數(shù)據(jù)包時(shí)，便將其存入接收數(shù)據(jù)緩沖隊(duì)列，并產(chǎn)生中斷，接收完成后，自動(dòng)轉(zhuǎn)入發(fā)送模式，發(fā)送應(yīng)答信號(hào)。 發(fā)射電路先采用 ADXL345加速度傳感器檢測(cè)鼠標(biāo)的移動(dòng)信息，然后輸出到單片機(jī) I/O口， 經(jīng)無(wú)線(xiàn)模塊將此信息發(fā)射到接收電路。然后不斷的循環(huán)。經(jīng)測(cè)試，該電路不僅具備普通 有線(xiàn)鼠標(biāo)的全部功能，還可遠(yuǎn)距離靈活操縱鼠標(biāo)。我們不能學(xué)到后面就忘了前面的知識(shí)，更應(yīng)該將所學(xué)的知識(shí)緊緊的結(jié)合在一起，綜合運(yùn)用，所謂設(shè)計(jì)，就是要求創(chuàng)新，只有將知識(shí)綜合運(yùn)用起來(lái)才能真正的設(shè)計(jì)好。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。s performers of the troupe still tour the region39。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2022 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li Keran’s masterwork Jinggang Mountain fetched million yuan, an unexpected high in recent years. However, the trading volume fells to billion yuan from billion yuan in the same period the year before. The Huangchen 2022 Spring Auctions, which recorded million yuan in total sales, experienced the same. The section number went down to 5 from 12 pared to last year. According to expert Shao Jianwu, the art market did not attract much excitement this year due to the booming stock market and the persistent problems of fery and fake deals. The two pieces of Chinese painting notched up high price this spring due to