wifi-tally_Oostendam/nodemcu-firmware/lua_examples/pcm/play_file.lua

43 lines
989 B
Lua
Raw Permalink Normal View History

2021-09-27 19:52:27 +00:00
-- ****************************************************************************
-- Play file with pcm module.
--
-- Upload jump_8k.u8 to spiffs before running this script.
--
-- ****************************************************************************
local function cb_drained()
print("drained "..node.heap())
file.seek("set", 0)
-- uncomment the following line for continuous playback
--d:play(pcm.RATE_8K)
end
local function cb_stopped()
print("playback stopped")
file.seek("set", 0)
end
local function cb_paused()
print("playback paused")
end
do
file.open("jump_8k.u8", "r")
local drv = pcm.new(pcm.SD, 1)
-- fetch data in chunks of FILE_READ_CHUNK (1024) from file
drv:on("data", function(driver) return file.read() end) -- luacheck: no unused
-- get called back when all samples were read from the file
drv:on("drained", cb_drained)
drv:on("stopped", cb_stopped)
drv:on("paused", cb_paused)
-- start playback
drv:play(pcm.RATE_8K)
end