From 360bc81c7532b6677dfb01898bbd94eca6ab75d2 Mon Sep 17 00:00:00 2001 From: xengineering Date: Thu, 24 Jul 2025 22:51:23 +0200 Subject: pcb: Use red LED for error indication The idea of the red LED used to be to indicate power delivery to the board independent of firmware. While this is good to know it adds the constraint that even without firmware the LED should light up. Furthermore it should stop lighting up when the firmware takes over the blinking with different colors. This was solved with a NOT gate. This adds more parts to the assembly at the cost of rare space. To reduce space consumption this feature is removed. The effect is that the user cannot distinguish anymore if the board has an issue with power supply or with not running firmware. This is acceptable because the user cannot do anything about both issues. Developers have the chance to e.g. connect the UART to validate if the firmware is running. --- pcb/processor.kicad_sch | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'pcb/processor.kicad_sch') diff --git a/pcb/processor.kicad_sch b/pcb/processor.kicad_sch index 355b2b1..628c4c0 100644 --- a/pcb/processor.kicad_sch +++ b/pcb/processor.kicad_sch @@ -4403,17 +4403,6 @@ ) (uuid "6f1da862-866e-4613-b148-bd73f5d74510") ) - (hierarchical_label "LED_PWR" - (shape output) - (at 102.87 119.38 180) - (effects - (font - (size 1.27 1.27) - ) - (justify right) - ) - (uuid "6f559997-3ab3-4801-91cc-bd35a3229ef7") - ) (hierarchical_label "LED_ACT" (shape output) (at 102.87 124.46 180) @@ -4524,6 +4513,17 @@ ) (uuid "ca1a5197-1705-44af-9a69-adaa399ddc1f") ) + (hierarchical_label "LED_ERR" + (shape output) + (at 102.87 119.38 180) + (effects + (font + (size 1.27 1.27) + ) + (justify right) + ) + (uuid "d94ac1fd-4482-4de1-86f8-2de33061a9dc") + ) (hierarchical_label "~{PHY_RESET}" (shape output) (at 102.87 127 180) -- cgit v1.2.3-70-g09d2