add sawtooth

.gitignore

@@ -0,0 +1,110 @@
+ipcache
+*.ip_user_files
+*.dcp
+*.cache
+*.data
+*.xpr
+*.log
+*.bld
+*.chk
+*.cmd_log
+*.cxt
+*.gise
+*.gyd
+*.jed
+*.lso
+*.mfd
+*.nga
+*.ngc
+*.ngd
+*.ngr
+*.pad
+*.pnx
+*.prj
+*.rpt
+*.stx
+*.syr
+*.tim
+*.tspec
+*.vm6
+*.xst
+*.html
+*.xrpt
+*.err
+*_html
+*.sld
+*.txt
+*.qsys
+*.csv
+xst
+netgen
+iseconfig
+xlnx_auto*
+_ngo
+_xmsgs
+component.xml
+*.jou
+xgui
+*.runs
+*.srcs
+*.sdk
+.Xil
+*_INFO.txt
+*_dump.txt
+db
+*.asm.rpt
+*.done
+*.eda.rpt
+*.fit.*
+*.map.*
+*.sta.*
+*.qsf
+*.qpf
+*.qws
+*.sof
+*.rbf
+system_qsys_script.tcl
+hc_output
+hps_isw_handoff
+hps_sdram_*.csv
+incremental_db
+system_bd/
+reconfig_mif
+*.sopcinfo
+*.jdi
+*.pin
+*.os
+*webtalk*
+*.xml
+*.hw
+gui
+.timestamp_intel
+temporary_case_dependencies.mk
+*.zip
+*.str
+*.vcd
+*.wlf
+transcript
+tags
+boot_bin
+_info
+_vmake
+*.qdb
+*.qpg
+*.qtl
+*.xpe
+*.gen*
+*.xsa
+*.pdi
+library/**/bd/bd.tcl
+*.syn.smsg
+*.syn.summary
+qdb
+tmp-clearbox
+*.bin
+__pycache__
+_build
+.qsys_edit
+.github/CODEOWNERS
+.github/PULL_REQUEST_TEMPLATE.md
+library/**/.lock

01-WaveformGenerator/WaveformGenerator/hdl/sawtoothGen_studentVersion.vhd

@@ -1,5 +1,21 @@
 ARCHITECTURE studentVersion OF sawtoothGen IS
+
+	signal counter : unsigned(bitNb-1 downto 0);
+	
 BEGIN
-  sawtooth <= (others => '0');
+
+	count: process(reset, clock, en, step)
+	begin
+		if reset = '1' then
+			counter <= (others => '0');
+		elsif rising_edge(clock) then
+			if en = '1' then
+				counter <= counter + step;
+			end if;
+		end if;
+	end process count;
+	
+	sawtooth <= counter;
+
 END ARCHITECTURE studentVersion;