Fix Readme

README.md

@@ -1,7 +1,59 @@
 # P2FA
 
-Hardware 2FA Manager
+### Hardware 2FA Manager
 
  - https://www.adafruit.com/product/4282
  - https://github.com/waveshareteam/e-Paper/tree/master
  - https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT_Manual#C
+
+
+### Prep build environment:
+ - LG:
+ ```bash
+wget https://github.com/joan2937/lg/archive/master.zip
+unzip master.zip
+cd lg-master
+make
+sudo make install
+```
+ - BCM2835
+```bash
+wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.71.tar.gz
+tar zxvf bcm2835-1.71.tar.gz
+cd bcm2835-1.71/
+sudo ./configure && sudo make && sudo make check && sudo make install 
+```
+
+### Required libs:
+ - make
+ - cmake
+ - python3
+ - python3-pip
+ - gpiod
+ - libgpiod-dev
+ - libpng-dev
+ - libncurses-dev
+
+### Build
+`./build.sh`
+
+Executable will be in the "c" directory
+If moving to an alternate directory, ensure the c/libs/libgo_p2fa.so is copied.<br><br>
+To add a config, create a text file in the ~/.totp directory (if it doesn't exist then create it). The name of the file will be what is populated on the device.<br>
+Ex: "google.txt" will be displayed as "google"<br><br>
+File Format:<br>
+```text
+key: (Base32 Key, REQUIRED)
+hash: (sha1, sha256, sha512, or hmac. OPTIONAL) (default is sha1)
+timestep: (int representing duration in seconds between codes, default is 30, OPTIONAL)
+counter: (int between 6 and 10 inclusive, HOTP counter, default is 6, OPTIONAL)
+digits: (int between 1 and 10 inclusive, how many digits to generate, default is 6, OPTIONAL) 
+```
+Example:
+```text
+key: GGAMSYNKW3H7HEKK
+hash: sha1
+timestep: 30
+counter: 6
+digits: 6
+```

c/src/p2fa.c

@@ -37,7 +37,7 @@ int computeWidth(char* text, sFONT *font) {
     return (font->Width) * strlen(text);
 }
 
-//TODO Put display to sleep after
+//TODO Put display to sleep after so many refreshes
 void code(UWORD *blackImage, char* confName) {
     int ch;
     while(1) {