モーション起動スイッチで超低消費電力IoT：FlashAirのファームウェア

adxl362.lua

--SPI Init
function spi_init()
  fa.spi("init", 1) --1.6MHz@W-04
  fa.spi("mode", 0) --MODE=0
  sleep(1000)
end

-- SPI Write
function spi_write(reg, data)
  fa.spi("cs", 0) --CS : ON
  fa.spi("write", 0x0A) --Reg Write
  fa.spi("write", reg)
  fa.spi("write", data)
  fa.spi("cs", 1) --CS :OFF
  sleep(100)
end

-- SPI Read
function spi_read(reg)
  fa.spi("cs", 0) --CS : ON
  fa.spi("write", 0x0B) --Reg Read
  fa.spi("write", reg)
  data = fa.spi("read")
  fa.spi("cs", 1) --CS :OFF
  sleep(100)
  return data
end

---------- Main ----------
-- SPI Initial Setting
spi_init()

-- ADXL362 Setting
spi_write(0x20, 0x50) -- Activity threshold Lower : 80
spi_write(0x21, 0x00) -- Activity threshold Upper : 80
spi_write(0x22, 0x00) -- Activity timer (only 1Byte) : 0
spi_write(0x23, 0xFF) -- Inactivity threshold Lower : MAX(0x07FF)
spi_write(0x24, 0x07) -- Inactivity threshold Upper : MAX(0x07FF)
spi_write(0x25, 0x06) -- Inactivity timer Lower : 1sec
spi_write(0x26, 0x00) -- Inactivity timer Upper : 1sec
spi_write(0x27, 0x1F) -- Motion detection, activity/inactivity detection : LINK mode
spi_write(0x2B, 0xC0) -- INT2 MAP : AWAKE bit, set ActiveLow
spi_write(0x2D, 0x0E) -- Power Control : WAKEUP, AUTOSLEEP, Start measurement

-- Sleep 10sec
sleep(10000)

-- Send HTTP GET request
url_string = "https://***********************************************************************"
fa.request{ url = url_string, method = "GET" }

-- ADXL362 INT2 flag clear
spi_read(0x0B)

"https:// ***********************************************************************" はクラウドアプリのURLを記入すること