we use l432, not l442

README.md

@@ -41,13 +41,13 @@ If you have a Solo for Hacker, here's how you can load your own code on it. You
 git clone --recurse-submodules https://github.com/SoloKeysSec/solo
 cd solo
 
-cd targets/stm32l442
+cd targets/stm32l432
 make cbor
 make all-hacker
 python ../../tools/programmer.py solo.hex
 ```
 
-For example, if you want to turn off any blue light emission, you can edit [`led_rgb()`](https://github.com/SoloKeysSec/solo/blob/master/targets/stm32l442/src/led.c#L15) and force:
+For example, if you want to turn off any blue light emission, you can edit [`led_rgb()`](https://github.com/SoloKeysSec/solo/blob/master/targets/stm32l432/src/led.c#L15) and force:
 ```
 uint32_t b = 0;
 ```

docs/building.md

@@ -21,7 +21,7 @@ To program your build, you'll need one of the following programs.
 Enter the `stm32l4xx` target directory.
 
 ```
-cd targets/stm32l442
+cd targets/stm32l432
 ```
 
 Build the cbor library.

docs/contributing.md

@@ -2,11 +2,11 @@ We are very open to contributions!
 
 [Currently](https://github.com/solokeyssec/solo/issues), most work will go towards
 
-* implementing STM32L442
+* implementing STM32L432
 * implementing NFC
 * adding documentation and improving accessability of the code
 
-In the future, we would love to see creative plugins/extensions, putting the TRNG and other features of the STM32L442 to good use! 
+In the future, we would love to see creative plugins/extensions, putting the TRNG and other features of the STM32L432 to good use! 
 
 Feel free to send a [pull request](https://github.com/SoloKeysSec/solo/pulls) at any time, we don't currently have a formal contribution process.
 

docs/signed-updates.md

@@ -2,7 +2,7 @@
 Solo has a bootloader that's fixed in memory to allow for signed firmware updates.  It is not a built-in bootloader provided by the chip
 manufacturer, it is our own. We plan to use Ed25519 signatures, which have [efficient constant-time implementations on Cortex-M4 chips](http://www.cs.haifa.ac.il/~orrd/LC17/paper39.pdf).
 
-On the STM32L442, there is 256 KB of memory.  The first 14 KB of memory is reserved for the bootloader.
+On the STM32L432, there is 256 KB of memory.  The first 14 KB of memory is reserved for the bootloader.
 The bootloader is the first thing that boots, and if the button of the device is not held for 2 seconds, the
 application is immediately booted.
 

targets/stm32l432/Makefile.test.mk

@@ -24,10 +24,8 @@ CFLAGS= $(INC)
 TARGET=solo
 HW=-mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb
 
-# Nucleo board
+# Solo or Nucleo board
-#CHIP=STM32L432xx
+CHIP=STM32L432xx
-# Solo
-CHIP=STM32L442xx
 
 DEFINES = -D$(CHIP) -DAES256=1  -DUSE_FULL_LL_DRIVER
 DEFINES += -DTEST_SOLO_STM32 -DTEST

targets/stm32l432/application.mk

@@ -36,10 +36,8 @@ CFLAGS= $(INC)
 TARGET=solo
 HW=-mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb
 
-# Nucleo board
+# Solo or Nucleo board
-#CHIP=STM32L432xx
+CHIP=STM32L432xx
-# Solo
-CHIP=STM32L442xx
 
 ifndef DEBUG
 DEBUG=0

targets/stm32l432/bootloader.mk

@@ -34,10 +34,8 @@ CFLAGS= $(INC)
 TARGET=bootloader
 HW=-mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb
 
-# Nucleo board
+# Solo or Nucleo board
-#CHIP=STM32L432xx
+CHIP=STM32L432xx
-# Solo
-CHIP=STM32L442xx
 
 ifndef DEBUG
 DEBUG=0