移植bot4cj

bot4cj/modules/SPI.lua

@@ -0,0 +1,163 @@
+-- SPI 硬件
+
+--
+SPI_SUCCESS = 0
+SPI_FAILED = 1
+
+-- 全局文件句柄
+fd = 0
+
+-- 这个函数是辅助用的，它能够打印一张表出来
+function print_table(t, indent)
+    indent = indent or 0
+    for k, v in pairs(t) do
+        if type(v) == 'table' then
+            print(string.rep(' ', indent) .. k .. ":")
+            print_table(v, indent + 2)
+        else
+            print(string.rep(' ', indent) .. k .. ": " .. tostring(v))
+        end
+    end
+end
+
+
+
+function build(data)
+
+	-- 检查该参数是否是一张表
+	if type(data) ~= "table" then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: table"
+		}
+	end
+
+	print("-------- SPI.Lua builder func get a table --------")
+	print_table(data)
+	print("--------------------------------------------------")
+	local path = data.path
+
+	-- 检查文件句柄参数是否存在
+	if path == nil then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: path"
+		}
+	end
+
+	-- 模式
+	local spi_mode = data.spi_mode
+	if spi_mode == nil then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: spi_mode"
+		}
+	end
+	print(spi_mode)
+	spi_mode = tonumber(spi_mode)
+
+	-- 比特
+	local bits = data.bits
+	if bits == nil then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: bits"
+		}
+	end
+	bits = tonumber(bits)
+
+
+	-- 速率
+	local speed = data.speed
+	if speed == nil then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: speed"
+		}
+	end
+	speed = tonumber(speed)
+
+	--
+	local delay = data.delay
+	if delay == nil then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: delay"
+		}
+	end
+	delay = tonumber(delay)
+
+	-- 开始执行
+	fd = spi_open(path)
+	if fd <= 0 then
+		return {
+			result = "ERR",
+			message = "Failed to open SPI file"
+		}
+	end
+
+	local res = spi_setup(fd, spi_mode, bits, speed, delay)
+	if res ~= 0  then
+		return {
+			result = "ERR",
+			message = "Failed to setup SPI device"
+		}
+	end
+
+	return {
+		result = "OK",
+		fd = fd
+	}
+
+end
+
+
+
+
+function destroy(data)
+
+	-- 检查该参数是否是一张表
+	if type(data) ~= "table" then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: table"
+		}
+	end
+
+	print("-------- SPI.Lua ender func get a table --------")
+	print_table(data)
+	print(string.format("now fd: %i", fd))
+	print("------------------------------------------------")
+
+	spi_close(fd)
+	fd = -1
+
+	return {
+		result = "OK"
+	}
+
+end
+
+
+
+
+
+function call(data)
+
+	-- 检查该参数是否是一张表
+	if type(data) ~= "table" then
+		return {
+			result = "ERR",
+			message = "Invalid Arguments: table"
+		}
+	end
+
+	print("-------- SPI.Lua caller func get a table --------")
+	print_table(data)
+	print("-------------------------------------------------")
+
+	return {
+		fd = fd
+	}
+
+end