LMS-6 Radiosonde: Difference between revisions

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 IDA Pro uses CPU type ST7->ST72324J6 during loading, and can load the Intel Hex file produced by the programmer directly for analysis.
-===== Option Bytes =====
+=====Option Bytes=====
 Option bytes are set to 0xE7F7
 [[File:OptionBytes.png|none|thumb|ST7 Original Firmware Option Byte Info]]
+=== GPIO Initialization ===
+* PADDR = 0xF0, PAOR = 0x38 or 0x30 depending on address 0xF3
+** PA7: Open Drain Output
+** PA6: Open Drain Output
+** PA5: Push Pull Output
+** PA4: Push Pull Output
+** PA3: Depends on address 0xF3
+* PBDDR = 0x0F, PBOR=0x1F
+** PB4 - Pullup interrupt input
+** PB3 - Push Pull Output
+** PB2 - Push Pull Output
+** PB1 - Push Pull Output
+** PB0 - Push Pull Output
+* PCDDR = 0x03, PCOR=0x0B
+** PC7 - floating input
+** PC6 - floating input
+** PC5 - floating input
+** PC4 - floating input
+** PC3 - pullup input
+** PC2 - floating input
+** PC1 - push pull output
+** PC0 - push pull output
+* PDDDR = 0x20, PDOR=default to 0x0
+** PD5 - open drain output
+** PD4 - floating input
+** PD3 - floating input
+** PD2 - floating input
+** PD1 - floating input
+** PD0 - floating input
+* PFDDR = 0x20 or 0x80 depending on address 0xF3, PFOR=0x10 or 0x80 depending on address 0xF3
+** PF7 - depends on 0xF3
+** PF6 - floating input
+** PF5 - depends on 0xF3
+** PF4 - depends on 0xF3
+** PF2 - floating input
+** PF1 - floating input
+** PF0 - floating input
 ==Modifications==