diff options
Diffstat (limited to 'sds011.lua')
| -rw-r--r-- | sds011.lua | 28 |
1 files changed, 20 insertions, 8 deletions
@@ -18,8 +18,9 @@ local c_sleep = 0x00 local c_work = 0x01 local c_workperiod = 0x08 -sds011.work_period = nil sds011.active_mode = nil +sds011.work_period = nil +sds011.working = nil function sds011.finish_cmd(cmd) cmd = cmd .. string.char(0xff, 0xff) @@ -46,18 +47,22 @@ function sds011.set_report_mode(active) elseif active then cmd = c_active end - local cmd = string.char(c_head, c_id, c_report_mode, op, cmd) + cmd = string.char(c_head, c_id, c_report_mode, op, cmd) cmd = cmd .. string.char(0, 0, 0, 0, 0, 0, 0, 0, 0, 0) return sds011.finish_cmd(cmd) end -function sds011.sleep(sleep) - local cmd = string.char(c_head, c_id, c_sleepcmd, c_write) - if sleep then - cmd = cmd .. string.char(c_sleep) - else - cmd = cmd .. string.char(c_work) +function sds011.set_sleep(sleep) + local op = c_write + local cmd = c_work + if sleep == nil then + -- if the device is sleeping, it will not respond to a query + sds011.working = false + op = c_read + elseif sleep then + cmd = c_sleep end + cmd = string.char(c_head, c_id, c_sleepcmd, op, cmd) cmd = cmd .. string.char(0, 0, 0, 0, 0, 0, 0, 0, 0, 0) return sds011.finish_cmd(cmd) end @@ -94,6 +99,13 @@ function sds011.parse_frame(data) elseif command == 0xc5 and pm25l == 0x02 then sds011.active_mode = pm10l == 0 return true + elseif command == 0xc5 and pm25l == 0x06 then + if pm25h == 0 or pm10l == 1 then + sds011.working = true + else + sds011.working = false + end + return true elseif command == 0xc5 and pm25l == 0x08 then sds011.work_period = pm10l return true |