All lengths exist but they were out of stock which meant that the boards would have come without any headers. So I went for +4
Right now I am in the middle of finishing up the RA8876 24-bit color library using the DB5 so I can't fix the connectors till I am done...
I have not assembled yet. Been distracted with RA8876 24-bit conversionBut if you have the shield assembled, you can simply plug the RA8876 into the connector on it
Also hopefully Monday should have my order from OSHPark, that is new attempt at adapter to convert that RA8876 connection
into an Buydisplay ILI9488 connector. Also their NT35510 connector appears to be the same layout as their ILI9486, so should work
on that as well.
speaking of nt35510… somestuff is working in 8 bit mode… not great yetView attachment 35313
The Teensy has had a lot of display options, including: ILI9341, ILI948x, HX8357, ST7735/ST7789, RA8875, RA8876, ...
Exactly, now we have high (read higher) speeds which is nice. I really wish the 1062 had MIPI DSI. Oh well.The Teensy has had a lot of display options, including: ILI9341, ILI948x, HX8357, ST7735/ST7789, RA8875, RA8876, ...
But most of our support up till now has only been using the SPI interface.
I know that feeling!Fixed it
View attachment 35339
Now to see if I can keep a steady enough hand to solder it
/* RA8876_Config.h
A file to place user defines and configs.
*/
#ifndef RA8876_CONFIG_H
#define RA8876_CONFIG_H
// Hardware defines
#define RA8876_8080_CS 53
#define RA8876_8080_RESET 54
#define RA8876_8080_DC 55
#define RA8876_D0 40
#define BACKLITE 29
#define RA8876_RD 52 // FlexIO3:10: RD
#define RA8876_WR 56 // FlexIO3:11 WR
#define USE_8080_8_BIT_MODE 8
#define USE_8080_16_BIT_MODE 16
#define BUS_SPEED 20 //Available settings 2,4,8,12,20,24,30,40,60,120
#if 0
#define RA8876_8080_CS 11
#define RA8876_8080_DC 13
#define RA8876_8080_RESET 12
#define RA8876_WR 53
#define RA8876_RD 52
#define RA8876_D0 40
// DB5 Shield
//#define RA8876_8080_CS 11
//#define RA8876_8080_DC 13
//#define RA8876_8080_RESET 12
#define BUS_SPEED 20 //Available settings 2,4,8,12,20,24,30,40,60,120
//External backlight control connected to this Arduino pin
//#define BACKLITE 5
// #define BACKLITE 29
#endif
// Uncomment to use FT5206 touch.
#define USE_FT5206_TOUCH
#endif // RA8876_CONFIG_HHad the same thought - makes it easier especially since this morning I got nailed with the pin swap because I forgot about it. We had it defaulted correctly in the sketches
Good to see - had similar thought here wondering what tool to start with - seems a good way so can not hesitate when time allows
Thanks for the heads up. Maybe we should use your config file as the standard config to work off of. It's more inline with the shield and other variations. What do you think?
It's nice to be able to have just one unit and one USB C cable. Here is an image of the DB5, sheild and display. Also all of the wires and the 5Volt/GND strip it replaces:
Or you can use my variants version of core and try to create a variant for yours...
Happy to see others take us of this and make cool stuff. Amazing!Hey folks, I'm happy to report I was able to create a custom teensy with sdram using this thread as a reference
View attachment 35579
I was already in the throws of designing a custom teensy board that had usb host, usb device, and microsd all on a single edge, and adding the sdram was a no brainer. The driving force behind this was to have a board that I could place below another, and not need any cables or extensions to expose the usb and microsd ports.
Overall the process wasn't too difficult, and I intend to open source the kicad project for it shortly (hiding a private github repo url with the paper slip until I make a few more tweaks). Here are a few thoughts/observations regarding this build for anyone else considering doing this:
Thats it for now. Thanks for all the hard work that made this possible
- It's expensive. I used JLCPCB to manufacture and assemble, but I soldered the MKL02 chips so I wouldn't have to handle the logistics of getting the chips from PJRC to JLCPCB. I opted to have five boards manufactured, and total cost per board with all components and shipping was $85 USD. No doubt the price per board goes down if you increase the quantity, but I didn't want to order too many without confirming that they'd actually work.
- You have to hack teensyduino to get non standard pins working (among other things). This has already been mentioned in this thread, but if you do this, be prepared for some headaches connecting the dots. I opted to duplicate my arduino directory make my changes in the copied directory, and then have the directories shuffled around in my makefile before compiling. I am not excited about moving my changes over to a new teensyduino version.
- Do a better job planning out which pads to route than I did. My main goals were to be able to play with eLCDIF, and to be able increase the amount of data my application can use, but I also wanted to run the audio library and I failed to route an MCLK pin. The pads on the chip are named confusingly so take your time and triple check the pads you need.
I know the D0-D15 pins above match the LCD_DATAx pin
FLASHMEM static void config_sai1()
{
CCM_CCGR5 |= CCM_CCGR5_SAI1(CCM_CCGR_ON);
//PLL:
int fs = AUDIO_SAMPLE_RATE_EXACT;
// PLL between 27*24 = 648MHz und 54*24=1296MHz
int n1 = 4; //SAI prescaler 4 => (n1*n2) = multiple of 4
int n2 = 1 + (24000000 * 27) / (fs * 256 * n1);
double C = ((double)fs * 256 * n1 * n2) / 24000000;
int c0 = C;
int c2 = 10000;
int c1 = C * c2 - (c0 * c2);
set_audioClock(c0, c1, c2);
// clear SAI1_CLK register locations
CCM_CSCMR1 = (CCM_CSCMR1 & ~(CCM_CSCMR1_SAI1_CLK_SEL_MASK))
| CCM_CSCMR1_SAI1_CLK_SEL(2); // &0x03 // (0,1,2): PLL3PFD0, PLL5, PLL4
CCM_CS1CDR = (CCM_CS1CDR & ~(CCM_CS1CDR_SAI1_CLK_PRED_MASK | CCM_CS1CDR_SAI1_CLK_PODF_MASK))
| CCM_CS1CDR_SAI1_CLK_PRED(n1-1) // &0x07
| CCM_CS1CDR_SAI1_CLK_PODF(n2-1); // &0x3f
// Select MCLK
IOMUXC_GPR_GPR1 = (IOMUXC_GPR_GPR1
& ~(IOMUXC_GPR_GPR1_SAI1_MCLK1_SEL_MASK))
| (IOMUXC_GPR_GPR1_SAI1_MCLK_DIR | IOMUXC_GPR_GPR1_SAI1_MCLK1_SEL(0));
int rsync = 0;
int tsync = 1;
I2S1_TMR = 0;
//I2S1_TCSR = (1<<25); //Reset
I2S1_TCR1 = I2S_TCR1_RFW(1);
I2S1_TCR2 = I2S_TCR2_SYNC(tsync) | I2S_TCR2_BCP // sync=0; tx is async;
| (I2S_TCR2_BCD | I2S_TCR2_DIV((1)) | I2S_TCR2_MSEL(1));
I2S1_TCR3 = I2S_TCR3_TCE;
I2S1_TCR4 = I2S_TCR4_FRSZ((2-1)) | I2S_TCR4_SYWD((32-1)) | I2S_TCR4_MF
| I2S_TCR4_FSD | I2S_TCR4_FSE | I2S_TCR4_FSP;
I2S1_TCR5 = I2S_TCR5_WNW((32-1)) | I2S_TCR5_W0W((32-1)) | I2S_TCR5_FBT((32-1));
I2S1_RMR = 0;
//I2S1_RCSR = (1<<25); //Reset
I2S1_RCR1 = I2S_RCR1_RFW(1);
I2S1_RCR2 = I2S_RCR2_SYNC(rsync) | I2S_RCR2_BCP // sync=0; rx is async;
| (I2S_RCR2_BCD | I2S_RCR2_DIV((1)) | I2S_RCR2_MSEL(1));
I2S1_RCR3 = I2S_RCR3_RCE;
I2S1_RCR4 = I2S_RCR4_FRSZ((2-1)) | I2S_RCR4_SYWD((32-1)) | I2S_RCR4_MF
| I2S_RCR4_FSE | I2S_RCR4_FSP | I2S_RCR4_FSD;
I2S1_RCR5 = I2S_RCR5_WNW((32-1)) | I2S_RCR5_W0W((32-1)) | I2S_RCR5_FBT((32-1));
CORE_PIN23_CONFIG = 3; // MCLK
CORE_PIN21_CONFIG = 3; // RX_BCLK
CORE_PIN20_CONFIG = 3; // RX_SYNC
CORE_PIN7_CONFIG = 3; // TX_DATA0
I2S1_RCSR |= I2S_RCSR_RE | I2S_RCSR_BCE;
I2S1_TCSR = I2S_TCSR_TE | I2S_TCSR_BCE | I2S_TCSR_FRDE ;//<-- not using DMA */;
}CORE_PIN23_CONFIG = 3; // MCLK
CORE_PIN21_CONFIG = 3; // RX_BCLK
CORE_PIN20_CONFIG = 3; // RX_SYNC
CORE_PIN7_CONFIG = 3; // TX_DATA0
github.com
I put it up there now as Dogbone_DB4_DB5.xlsx
Hi Dogbone06, I have notice that you have order DevBoard5 frmo JLC some time before. Do you have already finish test of the board and if it is work OK. or have you test DevBoard 4.5. Is it work OK. Thanks.