diff options
Diffstat (limited to 'keyboard/hhkb_rn42/MEMO.txt')
| -rw-r--r-- | keyboard/hhkb_rn42/MEMO.txt | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/keyboard/hhkb_rn42/MEMO.txt b/keyboard/hhkb_rn42/MEMO.txt index 2f61574c3..337dad603 100644 --- a/keyboard/hhkb_rn42/MEMO.txt +++ b/keyboard/hhkb_rn42/MEMO.txt @@ -1,12 +1,37 @@ Roving RN-42 ============ -TODO ----- Bug: - with Nexus5 keyboard and mouse are very laggy. +- lose USB connection during power-down mode + - USB initialize code in main() causes this - WRONG + - Do not power-down during USB connection is active - DONE 11/11 + (USB_DeviceState == USB_DEVICE_Configured) is used to check USB connection + matrix_power_down() matrix.c - 11/23 + +Todo: + +Design: +- remove MCU dependent power saving code from core/keyboard + - it should be located in project matrix.c - DONE 11/23 +- HHKB matrix.c needs matrix_prev? + - is_modified() is obsolete now. really needs? + + +LUFA: +USB connection check: state of USB deivce +- USB_DeviceState: + USB_Deivce_State_t { Unattached, Powered, Default, Addressed, Configured*, Suspended* } +- USB_IsInitialized: state of LUFA core setup + becomes true in USB_Init() USBController_AVR8.c + becomes false in USB_Disable() USBController_AVR8.c +- USB_VBUS_GetStatus(): state of VBUS(power/connection) +- USB_Disable() detaches, disables all interrupts, controller, PLL, regulater. + + Power saving: +- confirm suspend mode lufa.c: matrix_power_*, suspend_wakeup_condition - 8MHz clock - When not connected in a few minutes get into deep sleep to save battery life - CTS is needed for waking up from deep sleep? How deep sleep is activated? @@ -19,6 +44,9 @@ Power saving: - high resistor 100K/1M? capacitor 10nF http://www.eevblog.com/forum/beginners/measuring-battery-voltage-without-consuming-current/ +- During USB suspend change clock source to internal RC from external Xtal(6.8) +- FRZCLK: you can freeze clock for power saving. still WAKEUPI and VBUSTI interrupts are available while freezing.(21.7.3) +- Suspend: Clear Suspend Bit, Freeze clock, disable PLL, MCU sleep(21.13) Improving: - BT LED; connecting, linked, sleeping, deep sleeping @@ -306,6 +334,10 @@ SM,5 Auto Connect ANY Mode (Mode =ANY) SM,6 automatically reconnect(Mode =Pair) confirm: auto connect works well but difficult to enter command mode. +SR,Z removes all remote addresses for reconnecting. + can be used to connect another host +SR,I registers last inquiry address + Fast data mode -------------- |