About a week ago, the new RISC-V HiFive1 Rev B boards from SiFive came in. The ijsbeer.org team joined in the crowdfunding campaign, and we're super excited to work with our boards. At today's AUGH, Anthony Russell-Smith and Rob Crowther (weilawei) took a look at the SiFive HiFive1 Rev B.
For datasheets and documentation, see the HiFive1 Rev B page on the Bare Metal Wiki.
We ordered two boards the moment we got the announcement.
We bought two boards at the early-bird price of $49 apiece. They're currently available for $59 each.
SiFive HiFive1 Rev B Development Kit
SiFive Freedom Everywhere FE310-G002
- SiFive E31 RISC-V CPU
- RV32IMAC
- 16KB L1 Instruction Cache
- 16KB Data SRAM Scratchpad
- Hardware Multiply and Divide
- Flexible Clock Generation with on-chip oscillators and PLLs
- 2x UARTs
- 1x QSPI
- 1x SPI
- PWMs
- GPIOs
- Always On Domain
Memory and Features
Nice packaging on the outside. They're smaller than we expected.
The packaging is pretty spiffy, but there's no good way to re-seal the boxes, which are closed by two small adhesive film dots.
You're getting the CPU, Flash, an ESP32, and a Cortex®-M4. Note the lack of DRAM and L2 caches.
There's a tiny anti-static bag with the board inside and a quickstart card.
The board comes packaged in a correspondingly tiny zip-lock-style bag.
Clockwise from top-left: Freedom Everywhere FE310-G002, ESP32-SOLO-1 under an EMI shield, 2x5-pin 1.54mm pin-pitch JTAG header, NXP MK22FN128VLH10 ARM® Cortex®-M4 Kinetis K20 32-bit microcontroller, and 4 MB ISSI IS25LP032D Flash
There's a link and QR code to http://l.ead.me/bb5Xv2 which redirects to https://www.sifive.com/go/hifive1-revb-getting-started and from there to a PDF of the HiFive1 Getting Started Guide.
Nice and traditional with no components solder-side.
The board is tiny: 6.8cm x 5.1cm! It has an attractive black solder mask with clean, precise silkscreening. This is a quality board, with everything well-soldered, neatly aligned, and oriented. One downside of it being so tiny is the 1.54mm pin-pitch 2x5-pin JTAG connector in place of the more usual 2.54mm pin-pitch one. We don't have any connectors quite that size on hand.
The RGB LED on the HiFive1 Rev B is very bright.
The HiFive1 Rev B is built to the same form factor as an Arduino.
In this comparison shot of the HiFive1 Rev B, you can see that it's a bit smaller than a Raspberry Pi 3 B+ in a Miuzei case and similar in size to an ATmega32 you might find on an Arduino board.
The SiFive Freedom Everywhere FE310-G002 SoC containing a SiFive E31 RISC-V core. Ours are both marked FE310-G002 621.1 1907.
The Flash chip is a 4 MB ISSI IS25LP032D module.
The HiFive1 Rev B includes an NXP MK22FN128VLH10 32-bit microcontroller with 128KB of Flash.
The board includes an NXP MK22FN128VLH10, an ARM® Cortex®-M4 Kinetis K20 32-bit microcontroller running at 100MHz with 128KB of Flash.
The WiFi and Bluetooth chip is an Esspressif ESP32-SOLO-1 32-bit microcontroller with 520 KiB SRAM. The QR code says 053205201901002301905001C3F0ESP0V301.
We're using a Raspberry Pi 3 B+ to talk to the HiFive1 Rev B over the MicroUSB port. This is managed by the NXP MK22FN128VLH10. The first USB device presented, /dev/ttyACM0 unless already assigned, provides a serial connection (115200/8/N/1) to the FE310-G002, displaying the SiFive shield logo on boot. (Note that the timestamps in the left column are from our terminal software.)
[15:39:33:262] <0x1b>[1F<0x1b>[0J<0x1b>[?25h<0x1b>[0;39;49mBench Clock Reset Complete␍␊
[15:39:33:277] ␍␊
[15:39:33:277] ATE0-->ATE0␍␊
[15:39:33:461] OK␍␊
[15:39:33:461] AT+BLEINIT=0-->OK␍␊
[15:39:33:491] AT+CWMODE=0-->OK␍␊
[15:39:33:706] ␍␊
[15:39:33:706] ␍␊
[15:39:33:706] ␍␊
[15:39:33:706] SIFIVE, INC.␍␊
[15:39:33:706] ␍␊
[15:39:33:706] 5555555555555555555555555␍␊
[15:39:33:706] 5555 5555␍␊
[15:39:33:706] 5555 5555␍␊
[15:39:33:723] 5555 5555␍␊
[15:39:33:723] 5555 5555555555555555555555␍␊
[15:39:33:723] 5555 555555555555555555555555␍␊
[15:39:33:846] 5555 5555␍␊
[15:39:33:846] 5555 5555␍␊
[15:39:33:846] 5555 5555␍␊
[15:39:33:846] 5555555555555555555555555555 55555␍␊
[15:39:33:846] 55555 555555555 55555␍␊
[15:39:33:846] 55555 55555 55555␍␊
[15:39:33:846] 55555 5 55555␍␊
[15:39:33:846] 55555 55555␍␊
[15:39:33:846] 55555 55555␍␊
[15:39:33:846] 55555 55555␍␊
[15:39:33:846] 55555 55555␍␊
[15:39:33:846] 55555 55555␍␊
[15:39:33:846] 555555555␍␊
[15:39:34:025] 55555␍␊
[15:39:34:025] 5␍␊
[15:39:34:025] ␍␊
[15:39:34:025] ␍␊
[15:39:34:025] Welcome to the SiFive HiFive1 Rev B!␍␊
The second USB device presented, /dev/ttyACM1, provides a serial connection (115200/8/N/1) to the ESP32-SOLO-1.
[21:33:10:186] ets Jun600:22:57␍␊
[21:33:10:186] ␍␊
[21:33:10:186] rst:0x1 (POWERON_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)␍␊
[21:33:10:205] configsip: 0, SPIWP:0xee␍␊
[21:33:10:205] clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00␍␊
[21:33:10:205] mode:DIO, clock div:2␍␊
[21:33:10:205] load:0x3fff0018,len:4␍␊
[21:33:10:205] load:0x3fff001c,len:5552␍␊
[21:33:10:205] ho 0 tail 12 room 4␍␊
[21:33:10:357] load:0x40078000,len:0␍␊
[21:33:10:357] load:0x40078000,len:13756␍␊
[21:33:10:357] entry 0x40078fb4␍␊
[21:33:10:357] <0x1b>[0;32m3) boot: ESP-IDF v3.0.1 2nd stage bootloader<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (30) boot: compile time 15:50:46<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (31) boot: Enabling RNG early entropy source...<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (35) boot: SPI Speed : 40MHz<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (39) boot: SPI Mode : DIO<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (43) boot: SPI Flash Size : 4MB<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (47) boot: Partition Table:<0x1b>[0m␍␊
[21:33:10:357] <0x1b>[0;32mI (51) boot: ## Label Usage Type ST Offset Length<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (58) boot: 0 phy_init RF data 01 01 0000f000 00001000<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (66) boot: 1 otadata OTA data 01 00 00010000 00002000<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (73) boot: 2 nvs WiFi data 01 02 00012000 0000e000<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (80) boot: 3 at_customize unknown 40 00 00020000 000e0000<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (88) boot: 4 ota_0 OTA app 00 10 00100000 00180000<0x1b>[0m␍␊
[21:33:10:486] <0x1b>[0;32mI (95) boot: 5 ota_1 OTA app 00 11 00280000 00180000<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mI (103) boot: End of partition table<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mI (107) boot: No factory image, trying OTA 0<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mI (112) esp_image: segment 0: paddr=0x00100020 vaddr=0x3f400020 size=0x205a0 (132512) map<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mep_image: segment 1: paddr=0x001205c8 vaddr=0x3ffc0000 size=0x031b4 ( 12724) load<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mI (173) esp_image: segment 2: paddr=0x00123784 vaddr=0x40080000 size=0x00400 ( 1024) load<0x1b>[0m␍␊
[21:33:10:614] <0x1b>[0;32mI (175) esp_image: segment 3: paddr=0x00123b8c vaddr=0x40080400 size=0x0c484 ( 50308) load<0x1b>[0m␍␊
[21:33:10:847] <0x1b>[0;32mI (204) esp_image: segment 4: paddr=0x00130018 vaddr=0x400d0018 size=0xde94c (911692) map<0x1b>[0m␍␊
[21:33:10:847] <0x1b>[0;32m2) esp_image: segment 5: paddr=0x0020e96c vaddr=0x4008c884 size=0x02c90 ( 11408) load<0x1b>[0m␍␊
[21:33:10:847] <0x1b>[0;32mI (529) esp_image: segment 6: paddr=0x00211604 vaddr=0x400c0000 size=0x00064 ( 100) load<0x1b>[0m␍␊
[21:33:10:847] <0x1b>[0;32mI (539) boot: Loaded app from partition at offset 0x100000<0x1b>[0m␍␊
[21:33:10:847] <0x1b>[0;32mI (540) boot: Disabling RNG early entropy source...<0x1b>[0m␍␊
[21:33:10:847] I (646) ifi: wifi firmware version: bffcf7f␍␊
[21:33:10:847] I (647) wifi: config NVS flash: enabled␍␊
[21:33:11:042] I (647) wifi: config nano formating: disabled␍␊
[21:33:11:042] I (656) wifi: Init dynamic tx buffer num: 32␍␊
[21:33:11:042] I (656) wifi: Init data frame dynamic rx buffer num: 32␍␊
[21:33:11:042] I (656) wifi: Init management frame dynamic rx buffer num: 32␍␊
[21:33:11:042] I (662) wifi: wifi driver task: 3ffe24f8, prio:23, stack:4096␍␊
[21:33:11:042] I (667) wifi: Init static rx buffer num: 10␍␊
[21:33:11:042] I (671) wifi: Init dynamic rx buffer num: 32␍␊
[21:33:11:042] I (675) wifi: wifi power manager task: 0x3ffe7428 prio: 21 stack: 2560␍␊
[21:33:11:042] I (713)ii: mode : null␍␊
[21:33:11:042] <0x1b>[0;31mE (714) HSPI-AT: Cannot get read data address.<0x1b>[0m␍␊
[21:33:11:256] I (715) wifi: mode : sta (3c:71:bf:b4:c3:58) + softAP (3c:71:bf:b4:c3:59)␍␊
[21:33:11:256] I (724) wifi: mode : null␍␊
[21:33:12:306] ets Jun82016 00:22:57␍␊
[21:33:12:310] ␍␊
[21:33:12:310] rst:0x1 (POWERON_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)␍␊
[21:33:12:410] configsip: 0, SPIWP:0xee␍␊
[21:33:12:410] clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00␍␊
[21:33:12:410] mode:DIO, clock div:2␍␊
[21:33:12:410] load:0x3fff0018,len:4␍␊
[21:33:12:410] load:0x3fff001c,len:5552␍␊
[21:33:12:410] ho 0 tail 12 room 4␍␊
[21:33:12:410] load:0x40078000,len:0␍␊
[21:33:12:410] load:0x40078000,len:13756␍␊
[21:33:12:410] entry 0x40078fb4␍␊
[21:33:12:410] <0x1b>[0;32m30) boot: ESP-IDF v3.0.1 2nd stage bootloader<0x1b>[0m␍␊
[21:33:12:410] <0x1b>[0;32mI (30) boot: compile time 15:50:46<0x1b>[0m␍␊
[21:33:12:410] <0x1b>[0;32mI (30) boot: Enabling RNG early entropy source...<0x1b>[0m␍␊
[21:33:12:410] <0x1b>[0;32mI (35) boot: SPI Speed : 40MHz<0x1b>[0m␍␊
[21:33:12:410] <0x1b>[0;32mI (39) boot: SPI Mode : DIO<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (43) boot: SPI Flash Size : 4MB<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (47) boot: Partition Table:<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (51) boot: ## Label Usage Type ST Offset Length<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (58) boot: 0 phy_init RF data 01 01 0000f000 00001000<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (65) boot: 1 otadata OTA data 01 00 00010000 00002000<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (73) boot: 2 nvs WiFi data 01 02 00012000 0000e000<0x1b>[0m␍␊
[21:33:12:674] <0x1b>[0;32mI (80) boot: 3 at_customize unknown 40 00 00020000 000e0000<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32mI (88) boot: 4 ota_0 OTA app 00 10 00100000 00180000<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32mI (95) boot: 5 ota_1 OTA app 00 11 00280000 00180000<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32mI (103) boot: End of partition table<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32mI (107) boot: No factory image, trying OTA 0<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32mI (112) esp_image: segment 0: paddr=0x00100020 vaddr=0x3f400020 size=0x205a0 (132512) map<0x1b>[0m␍␊
[21:33:12:865] <0x1b>[0;32m) esp_image: segment 1: paddr=0x001205c8 vaddr=0x3ffc0000 size=0x031b4 ( 12724) load<0x1b>[0m␍␊
[21:33:13:052] <0x1b>[0;32mI (173) esp_image: segment 2: paddr=0x00123784 vaddr=0x40080000 size=0x00400 ( 1024) load<0x1b>[0m␍␊
[21:33:13:052] <0x1b>[0;32mI (175) esp_image: segment 3: paddr=0x00123b8c vaddr=0x40080400 size=0x0c484 ( 50308) load<0x1b>[0m␍␊
[21:33:13:052] <0x1b>[0;32mI (204) esp_image: segment 4: paddr=0x00130018 vaddr=0x400d0018 size=0xde94c (911692) map<0x1b>[0m␍␊
[21:33:13:052] <0x1b>[0;32m2) esp_image: segment 5: paddr=0x0020e96c vaddr=0x4008c884 size=0x02c90 ( 11408) load<0x1b>[0m␍␊
[21:33:13:052] <0x1b>[0;32mI (529) esp_image: segment 6: paddr=0x00211604 vaddr=0x400c0000 size=0x00064 ( 100) load<0x1b>[0m␍␊
[21:33:13:235] <0x1b>[0;32mI (539) boot: Loaded app from partition at offset 0x100000<0x1b>[0m␍␊
[21:33:13:235] <0x1b>[0;32mI (540) boot: Disabling RNG early entropy source...<0x1b>[0m␍␊
[21:33:13:235] I (646) wifi: wifi firmware version: bffcf7f␍␊
[21:33:13:235] I (647) wifi: config NVS flash: enabled␍␊
[21:33:13:235] I (647) wifi: config nano formating: disabled␍␊
[21:33:13:235] I (656) wifi: Init dynamic tx buffer num: 32␍␊
[21:33:13:235] I (656) wifi: Init data frame dynamic rx buffer num: 32␍␊
[21:33:13:235] I (656) wifi: Init management frame dynamic rx buffer num: 32␍␊
[21:33:13:235] I (662) wifi: wifi driver task: 3ffe24f8, prio:23, stack:4096␍␊
[21:33:13:235] I (667) wifi: Init static rx buffer num: 10␍␊
[21:33:13:453] I (671) wifi: Init dynamic rx buffer num: 32␍␊
[21:33:13:453] I (675) wifi: wifi power manager task: 0x3ffe7428 prio: 21 stack: 2560␍␊
[21:33:13:453] I (714) wifi: mode : null␍␊
[21:33:13:453] <0x1b>[0;31mE (716) HSPI-AT: Cannot get read data address.<0x1b>[0m␍␊
[21:33:13:453] I (717) wifi: mode : sta (3c:71:bf:b4:c3:58) + softAP (3c:71:bf:b4:c3:59)␍␊
[21:33:13:453] I (725) wifi: mode : null␍␊
[21:33:13:880] I (1544i: flush txq␍␊
[21:33:13:880] I (1544) wifi: stop sw txq␍␊
[21:33:13:880] I (1545) wifi: lmac stop hw txq␍␊