VoCore2: Connect to SPI Screen 2

I am lucky, the screen backlight is not damaged by my mistake. 😂 1. connect the super tiny driver board to the screen.   2.ย power it up with 3.3V. The LCD backlight power consume is 5V 100mA, 0.5w, pretty much. I think that’s why the media always says the screen is one of the most […]

VoCore2: Connect to SPI Screen 2

Emm, actually I have made the board at Tuesday, but I get wrong part…😂 My stupid mistake: I plan to useย MP3202DJ to powerup the WLED, thenย I find SY7200AABC have better parameters and price is lower, but forget check its output voltage is 30V and feedback voltage is also double, which is exceed my output cap […]

VoCore2: Connect to SPI Screen

Last week I find a SPI screen(480×320+262K Color) in the dust, guess it’s time to make it work ๐Ÿ™‚ First of all, read read and read. Actually I can not find much useful information from the lcd datasheet. The two tables should be enough. LCD have three parts: a driver chip, which is ILI9488; a […]

VoCore: SPI & MicroSD 12

Finally it works ๐Ÿ™‚ But still not perfect. Thanks for noltari find the problem. Just change spi speed line in dts, then it works. Here is the patch and new spi-rt2880.c(rewrite by noltari) vocore_spi_sd_#1 spi-rt2880 Here is the screen capture. PS: here is the patch of VoCoreopenwrt-vocore patch 1. change ap to VoCore to avoid […]

VoCore: SPI & MicroSD 11

Just waiting for factory…So I am on SPI again. ๐Ÿ™‚ Last time I have done the driver, but it is not working with mmc. I think there must be something wrong with it, but after my test, the driver works quite well, so I guess I should make some mistake in mmc driver config. NEW […]

VoCore: SPI & MicroSD 10

It is a long time ๐Ÿ™‚ I am back to SPI & MicroSD. PS: PCB is ready today, and the boards has send to SMT/PCBA factory. Now the factory is counting the parts, the PCBA and test will start right now. Nothing is as easy as it looks. (Haha, Murphy’s theorem ๐Ÿ™‚ ) Paypal is […]

VoCore: SPI & MicroSD 9

Now I am back to SPI driver for the microSD. Thanks to Noltari, made such great process, this is the post http://vonger.cn/?topic=vocore-second-spi SPI_CS1 is working normal now. We found the SD card not working is caused by the SPI speed is too high when SD card in init process.(Noltari SPI-GPIO firmware works, confirmed that is […]

VoCore: SPI & MicroSD 8

Yesterday, just get some result from MISO but I do not know whether or not it is right result, or at least it is not random result caused by the noise. Today, I still not sure whether or not it is right mmc driver request result, but I am sure it is not a random […]

VoCore: SPI & MicroSD 7

Finally here is some good news. The SD card reply me.. ๐Ÿ˜€ Not sure whose problem now(might not the hardware problem), due to the reply is from spidev_test, the mmc driver still refuse its work. ๐Ÿ™‚ PS: VoCore: SPI & MicroSD 6 is done yesterday actually. Just too busy to publish it. Anyway, R4 R5 […]

VoCore: SPI & MicroSD 6

The factory contacted me today, the first 200pcs(beta, same as release one) will be done about Aug.12 and I need at least one day to test the new firmware, so there is only three days left to SPI CS1 driver, or we have to go plan B, leave that part alone for mass production then […]