Differences

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--- stm32:peripherals:gpio_analog [2016/02/25 07:13] – feur
+++ stm32:peripherals:gpio_analog [2022/12/28 08:18] (current) – [MODER] ruan
@@ Line 4: / Line 4: @@
   * The Schmitt trigger input is inactive.
   * The pull-up and -down resitors are inactive.
-  * Reading [[gpio#registers|IDR]] gets "0".
+  * Reading IDR returns "0".
 \\
-==== Configuration Registers ====
+===== Programming Instructions =====
-|< 100% 10em >|
+==== Enable Peripheral ====
-|[[gpio#registers|MODER]]|Select analog input mode|
+Make sure the peripheral is enabled:
+  * Enable GPIOx in ''RCC->AHBENR[0]''.
+==== Setup analog input mode ====
+Configure the MODE register, for every pin that should act as analog input:
+  * Write ''0x10'' to the corresponding fields in ''GPIOx->MODE''.
+\\
+===== Configuration Registers =====
+==== GPIOx_MODER - Mode register ====
+\\ {{gpio_reg_common.svg}} \\ \\
+|< 100% 5em 5em >|
+|Pin x|11|Analog input mode|