| paul@0 | 1 | -- vim: ft=lua ts=2 et sw=2 |
| paul@0 | 2 | |
| paul@0 | 3 | -- Start Mag to multiplex the framebuffer showing only a single program. |
| paul@0 | 4 | -- This example shows the keypad status as read from the matrix itself. |
| paul@0 | 5 | -- The target platform is the Letux 400 notebook computer. |
| paul@0 | 6 | |
| paul@0 | 7 | local L4 = require("L4"); |
| paul@0 | 8 | |
| paul@0 | 9 | local l = L4.default_loader; |
| paul@0 | 10 | |
| paul@0 | 11 | -- Define general access to peripherals. |
| paul@0 | 12 | |
| paul@0 | 13 | local io_buses = { |
| paul@0 | 14 | cpm = l:new_channel(); |
| paul@0 | 15 | gpio = l:new_channel(); |
| paul@0 | 16 | lcd = l:new_channel(); |
| paul@0 | 17 | pwm = l:new_channel(); -- exposes GPIO, PWM |
| paul@0 | 18 | }; |
| paul@0 | 19 | |
| paul@0 | 20 | l:start({ |
| paul@0 | 21 | caps = { |
| paul@0 | 22 | cpm = io_buses.cpm:svr(), |
| paul@0 | 23 | gpio = io_buses.gpio:svr(), |
| paul@0 | 24 | lcd = io_buses.lcd:svr(), |
| paul@0 | 25 | pwm = io_buses.pwm:svr(), |
| paul@0 | 26 | |
| paul@0 | 27 | icu = L4.Env.icu, |
| paul@0 | 28 | sigma0 = L4.cast(L4.Proto.Factory, L4.Env.sigma0):create(L4.Proto.Sigma0), |
| paul@0 | 29 | }, |
| paul@0 | 30 | }, |
| paul@7 | 31 | "rom/io rom/hw_devices.io rom/mips-letux400-common.io"); |
| paul@0 | 32 | |
| paul@0 | 33 | -- Expose a PWM peripheral as a device. |
| paul@0 | 34 | |
| paul@0 | 35 | local pwm = l:new_channel(); |
| paul@0 | 36 | |
| paul@0 | 37 | l:startv({ |
| paul@0 | 38 | caps = { |
| paul@0 | 39 | vbus = io_buses.pwm, |
| paul@0 | 40 | pwm = pwm:svr(), |
| paul@0 | 41 | }, |
| paul@0 | 42 | }, |
| paul@0 | 43 | "rom/dev_pwm_jz4730", "0", "250", "299", "47"); -- specifying peripheral number, parameters |
| paul@0 | 44 | |
| paul@0 | 45 | -- Expose a PWM backlight device. |
| paul@0 | 46 | |
| paul@0 | 47 | local backlight = l:new_channel(); -- exposes backlight device |
| paul@0 | 48 | |
| paul@0 | 49 | l:startv({ |
| paul@0 | 50 | caps = { |
| paul@0 | 51 | pwm = pwm, |
| paul@0 | 52 | backlight = backlight:svr(), |
| paul@0 | 53 | }, |
| paul@0 | 54 | }, |
| paul@0 | 55 | "rom/dev_backlight_pwm", "0", "300"); -- specifying limits |
| paul@0 | 56 | |
| paul@0 | 57 | -- Expose a display device for the Letux. |
| paul@0 | 58 | |
| paul@0 | 59 | local display = l:new_channel(); -- exposes display device |
| paul@0 | 60 | |
| paul@0 | 61 | l:start({ |
| paul@0 | 62 | caps = { |
| paul@0 | 63 | backlight = backlight, |
| paul@0 | 64 | display = display:svr(), |
| paul@0 | 65 | vbus = io_buses.gpio, |
| paul@0 | 66 | }, |
| paul@0 | 67 | }, |
| paul@0 | 68 | "rom/dev_display_letux400"); |
| paul@0 | 69 | |
| paul@0 | 70 | -- Expose the CPM peripheral. |
| paul@0 | 71 | |
| paul@0 | 72 | local cpm = l:new_channel(); |
| paul@0 | 73 | |
| paul@0 | 74 | l:start({ |
| paul@0 | 75 | caps = { |
| paul@0 | 76 | vbus = io_buses.cpm, |
| paul@0 | 77 | cpm = cpm:svr(), |
| paul@0 | 78 | }, |
| paul@0 | 79 | }, |
| paul@0 | 80 | "rom/dev_cpm_jz4730"); |
| paul@0 | 81 | |
| paul@0 | 82 | -- Expose a framebuffer device. |
| paul@0 | 83 | |
| paul@0 | 84 | local fbdrv_fb = l:new_channel(); |
| paul@0 | 85 | |
| paul@0 | 86 | l:start({ |
| paul@0 | 87 | caps = { |
| paul@0 | 88 | vbus = io_buses.lcd, |
| paul@0 | 89 | fb = fbdrv_fb:svr(), |
| paul@0 | 90 | cpm = cpm, |
| paul@0 | 91 | display = display, -- needed by LCD driver |
| paul@0 | 92 | }, |
| paul@0 | 93 | }, |
| paul@0 | 94 | "rom/fb-drv"); |
| paul@0 | 95 | |
| paul@0 | 96 | -- Multiplex the framebuffer. |
| paul@0 | 97 | |
| paul@0 | 98 | local mag_caps = { |
| paul@0 | 99 | mag = l:new_channel(), |
| paul@0 | 100 | svc = l:new_channel(), |
| paul@0 | 101 | }; |
| paul@0 | 102 | |
| paul@0 | 103 | l:start({ |
| paul@0 | 104 | caps = { |
| paul@0 | 105 | vbus = io_buses.gpio, -- needed by input driver |
| paul@0 | 106 | fb = fbdrv_fb, |
| paul@0 | 107 | mag = mag_caps.mag:svr(), |
| paul@0 | 108 | svc = mag_caps.svc:svr(), |
| paul@0 | 109 | }, |
| paul@0 | 110 | }, |
| paul@0 | 111 | "rom/mag"); |
| paul@0 | 112 | |
| paul@0 | 113 | -- Show the keypad status. |
| paul@0 | 114 | |
| paul@0 | 115 | l:start({ |
| paul@0 | 116 | caps = { |
| paul@0 | 117 | vbus = io_buses.gpio, |
| paul@0 | 118 | fb = mag_caps.svc:create(L4.Proto.Goos, "g=800x460+0+0", "barheight=20"), |
| paul@0 | 119 | }, |
| paul@0 | 120 | }, |
| paul@0 | 121 | "rom/ex_letux400_keypad"); |
