From d609dcb35dafebeafced9c40d92ddd5da630aa54 Mon Sep 17 00:00:00 2001 From: cheapie Date: Sat, 30 May 2026 08:58:29 -0500 Subject: Organize files better and include binaries for assembly samples --- assembly/rrxing/Makefile | 24 +++++ assembly/rrxing/rrxing.S | 198 ++++++++++++++++++++++++++++++++++++++++ assembly/rrxing/rrxing.elf | Bin 0 -> 6404 bytes assembly/rrxing/rrxing.hex | 35 +++++++ assembly/rrxing/rrxing.o | Bin 0 -> 4372 bytes assembly/rrxing/rvcontroller.ld | 1 + 6 files changed, 258 insertions(+) create mode 100644 assembly/rrxing/Makefile create mode 100644 assembly/rrxing/rrxing.S create mode 100755 assembly/rrxing/rrxing.elf create mode 100644 assembly/rrxing/rrxing.hex create mode 100644 assembly/rrxing/rrxing.o create mode 120000 assembly/rrxing/rvcontroller.ld (limited to 'assembly/rrxing') diff --git a/assembly/rrxing/Makefile b/assembly/rrxing/Makefile new file mode 100644 index 0000000..1f19256 --- /dev/null +++ b/assembly/rrxing/Makefile @@ -0,0 +1,24 @@ +MARCH ?= rv32imacbzicntr_zicond_zicsr_zifencei_zihintpause_zilsd_zclsd_zabha_zacas_zbkb_zbkx_zcb_zcmp_zcmt + +.PHONY: all dump load clean + +all: rrxing.hex + +rrxing.o: rrxing.S + riscv32-none-elf-as -I../rvcontroller-libraries -march=${MARCH} -o rrxing.o rrxing.S + +rrxing.elf: rrxing.o + riscv32-none-elf-ld -T rvcontroller.ld --no-warn-rwx-segments -o rrxing.elf rrxing.o + +dump: rrxing.elf + riscv32-none-elf-objdump -d rrxing.elf + +rrxing.hex: rrxing.elf + riscv32-none-elf-objcopy -O ihex rrxing.elf rrxing.hex + +load: rrxing.hex + bash -c "wl-copy < rrxing.hex" + +clean: + rm -f rrxing.bin rrxing.elf rrxing.o + diff --git a/assembly/rrxing/rrxing.S b/assembly/rrxing/rrxing.S new file mode 100644 index 0000000..61fb41c --- /dev/null +++ b/assembly/rrxing/rrxing.S @@ -0,0 +1,198 @@ +li a7,134 # Clear digilines buffer +ecall + +restart: +# Hardware initialization + +# Make sure light is off +li a7,129 # Send digilines message +la a0,lightchannel +la a1,lightoffmsg +ecall + +# Make sure bell is off +li a7,129 # Send digilines message +la a0,bellchannel +la a1,belloffmsg +ecall + +# Make sure gate is up +li a7,129 # Send digilines message +la a0,gatechannel +la a1,gateupmsg +ecall + +receiveloop: +li a7,133 # Get digilines buffer level +ecall +beq a0,x0,receiveloop # If no messages yet, restart the loop + +li a7,135 # Read digilines message +la a0,channelbuf +li a1,16 # Channel buffer size +la a2,msgbuf +li a3,16 # Message buffer size +ecall + +# Check if it's the right channel +la a0,channelbuf +la a1,detectchannel +call strcmp +beq a0,x0,receiveloop # Not the right channel, ignore it + +# Turn the light yellow +li a7,129 # Send digilines message +la a0,lightchannel +la a1,lightyellowmsg +ecall + +# Wait 1 second +li a0,1 +call sleep + +# Turn the bell on +li a7,129 # Send digilines message +la a0,bellchannel +la a1,bellonmsg +ecall + +# Wait 2 seconds +li a0,2 +call sleep + +# Turn the light red +li a7,129 # Send digilines message +la a0,lightchannel +la a1,lightredmsg +ecall + +# Wait 3 seconds +li a0,3 +call sleep + +# Lower the gate +li a7,129 # Send digilines message +la a0,gatechannel +la a1,gatedownmsg +ecall + +# Wait 5 seconds +li a0,5 +call sleep + +# Turn the bell off +li a7,129 # Send digilines message +la a0,bellchannel +la a1,belloffmsg +ecall + +waitlonger: + +# Wait 10 seconds +li a0,10 +call sleep + +# Check if any more trains have been detected +receiveloop2: +li a7,133 # Get digilines buffer level +ecall +beq a0,x0,raise # If no messages yet, go ahead with timing out + +# If there is a message, check if it's a train + +li a7,135 # Read digilines message +la a0,channelbuf +li a1,16 # Channel buffer size +la a2,msgbuf +li a3,16 # Message buffer size +ecall + +# Check if it's the right channel +la a0,channelbuf +la a1,detectchannel +call strcmp +beq a0,x0,receiveloop2 # Not the right channel, ignore this message and go on to the next + +# If it is the right channel, then get rid of the rest of the messages (if any) +li a7,134 # Clear digilines buffer +ecall + +j waitlonger # And go wait another 10 seconds + +raise: + +# Raise the gate +li a7,129 # Send digilines message +la a0,gatechannel +la a1,gateupmsg +ecall + +# Wait 2 seconds +li a0,2 +call sleep + +# Turn the light off +li a7,129 # Send digilines message +la a0,lightchannel +la a1,lightoffmsg +ecall + +# And go wait for the next train +j restart + +sleep: + # Expects a number of seconds in a0 + # Uses t0 + rdtime t0 + add a0,t0,a0 + sleep_loop: + rdtime t0 + bltu t0,a0,sleep_loop +ret + +strcmp: + # Expects string pointers in a0 and a1 + # Compares until a NUL is reached on the first string + # Uses t0, t1, and t2 + # Returns a0=1 if strings match, a0=0 otherwise + li t0,0 # t0 is the loop counter + strcmp_loop: + # Calculate addresses + add t1,a0,t0 # t1 is the pointer for the first string + add t2,a1,t0 # t2 is the pointer for the second string + + # Read the bytes from each string + lb t1,0(t1) + lb t2,0(t2) + + # Increment the loop counter + addi t0,t0,1 + + # And compare + bne t1,t2,strcmp_mismatch + + # Check if a terminator was reached yet, keep going otherwise + li t2,0 + bne t1,t2,strcmp_loop + + # If we got here they match + li a0,1 + ret + + strcmp_mismatch: + li a0,0 + ret + +channelbuf: .ascii " " +msgbuf: .ascii " " +lightchannel: .asciz "light" +bellchannel: .asciz "bell" +gatechannel: .asciz "gate" +lightoffmsg: .asciz "OFF" +lightyellowmsg: .asciz "YELLOW" +lightredmsg: .asciz "RED" +bellonmsg: .asciz "on" +belloffmsg: .asciz "off" +gateupmsg: .asciz "up" +gatedownmsg: .asciz "down" +detectchannel: .asciz "detect" diff --git a/assembly/rrxing/rrxing.elf b/assembly/rrxing/rrxing.elf new file mode 100755 index 0000000..cab0bf9 Binary files /dev/null and b/assembly/rrxing/rrxing.elf differ diff --git a/assembly/rrxing/rrxing.hex b/assembly/rrxing/rrxing.hex new file mode 100644 index 0000000..7283fa9 --- /dev/null +++ b/assembly/rrxing/rrxing.hex @@ -0,0 +1,35 @@ +:1000000093086008730000009308100817050000AB +:100010001305A51D970500009385251E730000009C +:1000200093081008170500001305851C97050000AC +:100030009385C51D73000000930810081705000084 +:100040001305551B970500009385851C7300000060 +:10005000930850087300000065DD930870081705C9 +:10006000000013058516C145170600001306E616A5 +:10007000C14673000000170500001305051597051C +:10008000000093856519292A61D593081008170582 +:10009000000013058515970500009385451673002C +:1000A00000000545F520930810081705000013050A +:1000B0002514970500009385351573000000094548 +:1000C000C1289308100817050000130505129705AD +:1000D000000093853513730000000D4555289308E3 +:1000E0001008170500001305F5109705000093850B +:1000F0005512730000001545612893081008170574 +:1001000000001305E50E9705000093852510730088 +:1001100000002945B528930850087300000015CD4C +:1001200093087008170500001305250AC145170636 +:1001300000001306860AC146730000001705000080 +:100140001305A508970500009385050D912861D535 +:1001500093086008730000006DBF9308100817052E +:10016000000013053509970500009385650A7300A3 +:1001700000000945312893081008170500001305F1 +:10018000C506970500009385450773000000ADBDC7 +:10019000F32210C01695F32210C0E3EEA2FE828077 +:1001A000814233035500B383550003030300838367 +:1001B00003008502631773008143E31473FE054552 +:1001C00082800145828020202020202020202020A5 +:1001D000202020202020202020202020202020201F +:1001E0002020202020206C696768740062656C6C98 +:1001F0000067617465004F46460059454C4C4F57A7 +:1002000000524544006F6E006F66660075700064B2 +:0C0210006F776E00646574656374000015 +:00000001FF diff --git a/assembly/rrxing/rrxing.o b/assembly/rrxing/rrxing.o new file mode 100644 index 0000000..09193ef Binary files /dev/null and b/assembly/rrxing/rrxing.o differ diff --git a/assembly/rrxing/rvcontroller.ld b/assembly/rrxing/rvcontroller.ld new file mode 120000 index 0000000..bc01402 --- /dev/null +++ b/assembly/rrxing/rvcontroller.ld @@ -0,0 +1 @@ +../../rvcontroller.ld \ No newline at end of file -- cgit v1.2.3