From f8bfb807d9d2f388e5a01f9da3603fffc18120a7 Mon Sep 17 00:00:00 2001 From: philippe44 Date: Sat, 4 Dec 2021 12:39:01 -0800 Subject: [PATCH] Update README.md --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index f9b3b849..b9e89386 100644 --- a/README.md +++ b/README.md @@ -268,7 +268,7 @@ model=,addr=,[,port=system|dac][,base=|100][,count=|16][,intr - intr: real GPIO to use as interrupt. Each expander must be -Note that PWM ("led_brightness" below) is not supported for expanded GPIOs and they cannot be used for high speed or precise timing signals like CS, D/C, Reset and Ready. Buttons, rotary encoder, amplifier control and power are supported. Depending on the actual chipset, pullup or pulldown might be supported so you might have to add external resistors (only 23x17 does pullup) +Note that PWM ("led_brightness" below) is not supported for expanded GPIOs and they cannot be used for high speed or precise timing signals like CS, D/C, Reset and Ready. Buttons, rotary encoder, amplifier control and power are supported. Depending on the actual chipset, pullup or pulldown might be supported so you might have to add external resistors (only MCP23x17 does pullup) ### LED See ยง**set_GPIO** for how to set the green and red LEDs. In addition, their brightness can be controlled using the "led_brigthness" parameter. The syntax is ```