Friday, May 18, 2018

Semihosting a problem

Any issue like "does not return from Sysini()", "though system is working but very slow", Semihosting is a problem.

Or, Vector Table (SVC vector) is placed in wrong(unexpected) location.

Tuesday, May 1, 2018

STM32F756G-EVAL 10 Mbps Half duplex not working

  /* Configure PA0
  GPIO_InitStructure.Pin =  GPIO_PIN_0;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);

  Note: Ethernet Full duplex mode works properly in the default setting
  (which MII_CRS is not connected to PA0 of STM32F756NGH6) because PA0 is shared
  with MC_ENA.
  If Half duplex mode is needed, uncomment PA0 configuration code source (above
  the note) and close the SB36 solder bridge of the STM32756G-EVAL board .
  */

  /* Configure PH3
  GPIO_InitStructure.Pin =  GPIO_PIN_3;
  HAL_GPIO_Init(GPIOH, &GPIO_InitStructure);

  Note: Ethernet Full duplex mode works properly in the default setting
  (which MII_COL is not connected to PH3 of STM32F756NGH6) because PH3 is shared
  with SDRAM chip select SDNE0.
  If Half duplex mode is needed, uncomment PH3 configuration code source (above
  the note) and close SB47 solder bridge of the STM32756G-EVAL board.
  */

  /* Configure PI10
  GPIO_InitStructure.Pin = GPIO_PIN_10;
  HAL_GPIO_Init(GPIOI, &GPIO_InitStructure);

  Note: Ethernet works properly in the default setting (which RX_ER is not
  connected to PI10 of STM32F756NGH6) because PI10 is shared with data signal
  of SDRAM.
  If RX_ER signal is needed, uncomment PI10 configuration code source (above
  the note) then remove R248 and solder SB9 of the STM32756G-EVAL board.
  */

Look at the source:

C:\Keil_v5\ARM\Pack\Keil\STM32F7xx_DFP\2.9.0\Projects\STM32756G_EVAL\Applications\LwIP\LwIP_HTTP_Server_Raw\Src\ethernetif.c

https://www.keil.com/boards2/stmicroelectronics/stm32756g_eval/#/eula-container

Thursday, March 22, 2018

Car comparison

https://www.quora.com/Which-is-the-most-comfortable-five-seater-hatchback-in-India

Factors to be available:
・Reclined rear seats for comfort, sleep and long travel
・More boot space
・larger windows and brighter (White, not black) cabin color
・High road clearance

Honda Jazz
・Check for reclined rear seats and Magic seat
・Seems to have flat floor surface
--
Further, the Jazz is the only hatchback in the market to get reclining rear seats, and also has a flat floor at the back (no hump due to the transmission tunnel). The rear seats also have the 'magic seats' trick, giving them a lot of flexibility.

I have taken test drive of Jazz, Baleno, Ford Figo, VW Polo, etc. I liked the Jazz the best. Only problem was I wanted automatic and top end Jazz (with magic seats) was not available with auto transmission. I went for Ford EcoSport instead. Baleno is quite good and VFM too but the rear seats are not comfy and have hard suspension, thus bumpy ride.
--

New Honda Jazz vs Hyundai i20: Specifications comparison

https://www.autocarindia.com/car-news/new-honda-jazz-vs-hyundai-i20-specifications-comparison-395862

Ground clearance: Jazz (165mm)  i20 (170mm) BR-v (210mm) Wagon-R (165 mm) kwid (180 mm)

When it comes to ground clearance, the Vitara Brezza comes second with 198 mm, just a shade under the Duster’s 205 mm.

The S-Cross has the lowest ground clearance at 180 mm while the Creta is in-between at 190 mm.


Swift (163 mm) 
  • Suzui Dezire 170 mm