动手学树莓派第7章：LED灯原来是这样点亮的

SAKSHAT提供的LED使用方法

当前SAKSHAT为我们提供的方法参考：http://wiki.nxez.com/saks:sdk:libraries:led74hc595

这里就直接摘录了，以下是创百科的内容:
74HC595 芯片驱动下的 LED 灯组类，控制一组 LED 工作。 方法

init(self, pins, real_true = GPIO.HIGH)

初始化对象，设置引脚和触发电平（高电平或低电平触发）。pins 为 IO 引脚数组。

ic(self)

返回当前驱动数码管的IC对象。

is_on(self, index)

返回当前 LED 的工作状态。true 或 false。index 为 LED 编号，从 0 开始。

row_status(self)

返回当前 LED 灯组的工作状态的数组。

on(self)

设置 LED 灯组为全部点亮状态。

off(self)

设置 LED 灯组为全部熄灭状态。

on_for_index(self, index)

设置当前 LED 灯组的第 index+1 个 LED 的状态为点亮。index 为 LED 编号，从 0 开始。

off_for_index(self, index)

设置当前 LED 灯组的第 index+1 个 LED 的状态为熄灭。index 为 LED 编号，从 0 开始。

set_row(self, status)

设置当前 LED 灯组的点亮状态。status 为布尔型数组。status 中的元素也可以为 None，表示不改变该元素位置的 LED 状态。

#点亮所有LED灯
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        #点亮所有LED灯
        SAKS.ledrow.on()
        
    except KeyboardInterrupt:
        print("任务被终止了")
#熄灭所有LED灯
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        #熄灭所有LED灯
        SAKS.ledrow.off()
        
    except KeyboardInterrupt:
        print("任务被终止了")

#返回当前LED灯组状态。
import time
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

led_status = []

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        #点亮所有灯并输出所有灯状态
        for i in range(0, 8):
            SAKS.ledrow.on_for_index(i)
        led_status = SAKS.ledrow.row_status
        print("点亮所有灯状态" + str(led_status))
        
        time.sleep(5)
        
        #关闭所有灯并输出等状态
        for i in range(0, 8):
            SAKS.ledrow.off_for_index(i)
        led_status = SAKS.ledrow.row_status
        print("关闭所有灯状态" + str(led_status))
        
        time.sleep(5)
        
        #熄灭所有LED灯
        SAKS.ledrow.off()
        
        #间隔点亮LED灯模式１
        for i in range(0, 8, 2):
            SAKS.ledrow.on_for_index(i)
        led_status = SAKS.ledrow.row_status
        print("间隔点亮LED灯模式１" + str(led_status))
        
        time.sleep(5)
        
        #熄灭所有LED灯
        SAKS.ledrow.off()
        
        #间隔点亮LED灯模式2
        for i in range(1, 8, 2):
            SAKS.ledrow.on_for_index(i)
        led_status = SAKS.ledrow.row_status
        print("间隔点亮LED灯模式2" + str(led_status))
        
    except KeyboardInterrupt:
        print("任务被终止了")

#返回当前LED单个灯状态。
import time
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

led_status = []

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        #熄灭所有LED灯
        SAKS.ledrow.off()
        
        #关闭所有灯并输出等状态
        for i in range(0, 8, 2):
            SAKS.ledrow.on_for_index(i)
        led_status = SAKS.ledrow.row_status
        print("关闭所有灯状态" + str(led_status))
        
        for i in range(0, 8):
            led_one_status = SAKS.ledrow.is_on(i)
            print("第" + str(i) + "个LED灯状态为" + str(led_one_status))
              
    except KeyboardInterrupt:
        print("任务被终止了")

#逐一点亮LED灯，然后逐一熄灭LED灯
import time
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        for i in range(0, 8):
            SAKS.ledrow.on_for_index(i)
            time.sleep(1)
            
        for i in range(0, 8):
            SAKS.ledrow.off_for_index(i)
            time.sleep(1)
        
    except KeyboardInterrupt:
        print("任务被终止了")

#设置LED灯族状态
import time
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        SAKS.ledrow.set_row([True, False, True, False, True, False, True, False])

        time.sleep(5)

        SAKS.ledrow.set_row([None, True, None, True, None, None, None, None])

        time.sleep(5)
        
        SAKS.ledrow.set_row([None, None, None, None, None, True, None, True])
        
        time.sleep(5)
        
        SAKS.ledrow.set_row([False, None, False, None, False, None, False, None])
        
        time.sleep(5)
        
        SAKS.ledrow.set_row([False, False, False, False, False, False, False, False])
        
    except KeyboardInterrupt:
        print("任务被终止了")

#流水灯走起
import time
from sakshat import SAKSHAT
from sakspins import SAKSPins as PINS

if __name__ == "__main__":
    try:
        #Declare the SAKS Board
        SAKS = SAKSHAT()
        
        while True:         
            for i in range(0, 8):
                SAKS.ledrow.on_for_index(i)
                time.sleep(0.1)
                SAKS.ledrow.off_for_index(i)
    except KeyboardInterrupt:
        print("任务被终止了")

课程 bilibili 视频地址：https://www.bilibili.com/video/av71878718/?p=18

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课程 gitee 地址：https://gitee.com/shirf_taste_raspi/shirf_serial_share