freedom-e-sdk - my bad beginner RISC-V assembly LED blinking code.

Age	Commit message (Collapse)	Author
2019-01-11	Merge pull request #140 from sifive/itim	Nathaniel Graff
	Update ITIM example to remove printfs
2019-01-10	Update ITIM example to remove printfs	Nathaniel Graff
	Signed-off-by: Nathaniel Graff <nathaniel.graff@sifive.com>
2019-01-09	Add timer interrupt example	Bunnaroath Sou

2019-01-09	Add software interrupt example	Bunnaroath Sou

2019-01-07	Add ITIM example	Nathaniel Graff
	Signed-off-by: Nathaniel Graff <nathaniel.graff@sifive.com>
2018-12-13	Move hello example to submodule	Nathaniel Graff
	Signed-off-by: Nathaniel Graff <nathaniel.graff@sifive.com>
2018-09-06	HiFive-1 board bit-bang i2c demo	Hasan Unlu
	Bit-bang i2c which is running around 400KHz. MPU6050 is used as an example device.
2018-07-09	remove non-vectored example	Drew Barbier

2018-07-05	preemption support, csipid from button 2	Drew Barbier

2018-07-05	use new cspid instead of msip	Drew Barbier

2018-07-05	fix level calculation	Drew Barbier

2018-07-04	clic driver level and priority functions	Drew Barbier

2018-07-02	short msi handler	Drew Barbier

2018-07-02	update description	Drew Barbier

2018-07-02	add busy wait and extra buttons/irq	Drew Barbier

2018-07-02	Delete clic_vectored	Drew Barbier

2018-07-02	dont use pre-empt with buttons	Drew Barbier

2018-07-02	e2 and clic start	Drew Barbier

2018-06-29	Add a CLIC interrupt example	Palmer Dabbelt
	This example is fairly simple, but it does at least demonstrate how to use a C-based preemptable interrupt handler that's been registered in CLIC mode on a SiFive E21.
2018-01-26	asm only program	Drew Barbier

2017-11-17	Speed up Dhrystone on the HiFive1	Palmer Dabbelt
	There's a handful of things that went wrong here: * The read-only data sections were mapped to flash, which is very slow. I just put them in the data segment, so they end up in the scratchpad. This is about a 10x hit, so it's really important. * The toolchain was an old version, which didn't have a fast memcpy implementation on 32-bit systems. This is about a 2x hit. * Some compiler flags were incorrect, including * -Os instead of -O3 * Missing -mexplicit-relocs * Missing -DNOENUM * Missing -falign-functions=4 I haven't checked how much those hurt With this, I get $ make software BOARD=freedom-e300-hifive1 PROGRAM=dhrystone LINK_TARGET=dhrystone $ make upload BOARD=freedom-e300-hifive1 PROGRAM=dhrystone LINK_TARGET=dhrystone Execution starts, 10000000 runs through Dhrystone Execution ends Final values of the variables used in the benchmark: Int_Glob: 5 should be: 5 Bool_Glob: 1 should be: 1 Ch_1_Glob: A should be: A Ch_2_Glob: B should be: B Arr_1_Glob[8]: 7 should be: 7 Arr_2_Glob[8][7]: 10000010 should be: Number_Of_Runs + 10 Ptr_Glob-> Ptr_Comp: -2147470264 should be: (implementation-dependent) Discr: 0 should be: 0 Enum_Comp: 2 should be: 2 Int_Comp: 17 should be: 17 Str_Comp: DHRYSTONE PROGRAM, SOME STRING should be: DHRYSTONE PROGRAM, SOME STRING Next_Ptr_Glob-> Ptr_Comp: -2147470264 should be: (implementation-dependent), same as above Discr: 0 should be: 0 Enum_Comp: 1 should be: 1 Int_Comp: 18 should be: 18 Str_Comp: DHRYSTONE PROGRAM, SOME STRING should be: DHRYSTONE PROGRAM, SOME STRING Int_1_Loc: 5 should be: 5 Int_2_Loc: 13 should be: 13 Int_3_Loc: 7 should be: 7 Enum_Loc: 1 should be: 1 Str_1_Loc: DHRYSTONE PROGRAM, 1'ST STRING should be: DHRYSTONE PROGRAM, 1'ST STRING Str_2_Loc: DHRYSTONE PROGRAM, 2'ND STRING should be: DHRYSTONE PROGRAM, 2'ND STRING Microseconds for one run through Dhrystone: 1.3 Dhrystones per Second: 714285.6 which is 1.55 DMIPS/MHz at 262 MHz. It's still a bit slower than our current stuff, but I don't remember what was actually in the HiFive1 so I'm not sure what we should be getting. I verified the clock is accurate with a stopwatch. I haven't bothered to go look through the binary, but I think we're about 10 cycles off so it should be managable.
2017-08-15	blacklisted watchdog program for coreplexip-e51-arty board	Gleb Gagarin

2017-08-10	added ecall to vectored irq example	Drew Barbier

2017-08-07	HiFive1 AON Watchdog example	Drew Barbier

2017-07-26	changed synch trap entry to match other vectors	Drew Barbier

2017-07-26	removed bin file commited by accident	Drew Barbier

2017-07-26	fixed comments	Drew Barbier

2017-07-25	added vectored interrupt example	Drew Barbier

2017-06-14	led_fade doesn't build on the e300-arty	Palmer Dabbelt

2017-06-14	Add a SMP example	Palmer Dabbelt
	This just prints "hello world" on two cores. It contains an example of how to initialize a multi-core system using IPIs, and a simple spin lock.
2017-06-14	Call puts instead of printf when printing constants	Palmer Dabbelt
	printf doesn't fit in the scratchpad, but since there's really no reason to call it on constant strings it can be replaced with puts. With this change, the "hello" example fits in the scratchpad.
2017-06-14	New Freedom Studio Examples (#66)	Megan Wachs
	* examples ported to ilg build plugin * project cleanup * CoreplexIP-E31 ilg projects * E51FPGA ilg projects * Tested Debug * debug launch files * E31 Debug Launch Files * removed typo project * E51 launch files. Forgotten E31 File * Missing coreplexip files * examples ported to ilg build plugin * project cleanup * CoreplexIP-E31 ilg projects * E51FPGA ilg projects * Tested Debug * debug launch files * E31 Debug Launch Files * removed typo project * E51 launch files. Forgotten E31 File * Missing coreplexip files * starting fresh * HiFive1 demo_gpio and libwrap * hifive1 hello * debug launchers for hello and demo_gpio * hifive1 led_fade * led_fade: Since E300 Arty Dev Kit doesn't have a PRCI, the led_fade demo doesn't really work on it. * update include paths to ease generating stand-alone zips * Adding E51 Examples * E51 demo launch files * E31 Demos * E31 demo launch files
2017-06-13	led_fade: make sure the HFROSC is running before you try to use it.	mwachs5

2017-06-10	We no longer define __riscv64, we define __riscv_xlen=64	Palmer Dabbelt

2017-06-09	Support the performance counters example on 32-bit	Palmer Dabbelt

2017-06-09	Mark more boards as unsupported	Palmer Dabbelt

2017-06-08	Add a simple regression script	Palmer Dabbelt

2017-05-05	local_interrupts: fix typo in the instructions	Megan Wachs

2017-05-04	Update SDK For E31/E51 Coreplex IP Evaluation	Megan Wachs

2017-03-01	led_fade: Add NO_INIT flag to keep default clock frequency and UART ↵	Megan Wachs
	configurations.
2017-03-01	Add a 'performance counters' demo.	Megan Wachs

2017-01-31	Move plic_driver code to a common location.	Megan Wachs

2017-01-24	use relaxed memory model for bitbang demo to avoid unncessary fences in the ↵	Megan Wachs
	output
2017-01-24	Add atomic bit-banging to the demo	Megan Wachs

2017-01-24	Use register macros instead of volatile addresses	Megan Wachs

2017-01-11	double_tap_dontboot: Clean up indentation	mwachs5

2017-01-11	Spaces, not tabs.	mwachs5

2017-01-11	Add the 'bootloader' which ships on HiFive1 Boards.	mwachs5

2017-01-10	Add the led_fade demo which ships on HiFive1 boards	mwachs5

2017-01-03	Add CoreMark build skeleton	Andrew Waterman