raspberry pi camera v2.1 #1
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HI zappos23, Great to hear that you found my work helpful! 🙂 If you're getting the Arduino logo then there are bigger problems so let's figure that out first. It can only come from the default program in the onboard flash memory. How are you trying to load the bitstream? Unfortunately, I don't have an imx219 handy. I had borrowed one at the time but never got it to work. The problems from what I remember:
Here are some resources that might be helpful in getting it to work:
As for the overall direction of mipi-ccs, I'm considering setting up something to convert the V4L2 linux drivers into the equivalent ones for an FPGA. |
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Hi @sameer, Thank you for taking time to reply to my questions. Regarding on how i upload the bitstream, i referred to this github https://github.com/HerrNamenlos123/JTAG_Interface. This is the only method i know of. So far i've tried it on your hdmi-demo project and its working fine. Please let me know if there is other better way to upload bitstream. I didn't know that the Arduino logo is from default program. Thanks for pointing that out. After not getting anything display on the screen, I went and press the reset button twice. Only after that the logo appeared. So i thought maybe the double reset has caused the board to go back to default program. I will double check on that. Regarding the power budget - i will try your suggested method #1 connect the camera after booted and see whether its working. I do not have an oscilloscopes, so i thought maybe i can utilised the JTAG module to send some signals from the camera to SAMD21 for observation. May i know if the data_rx from the i2c_master is from the camera's status register? Thanks for the documents. Looking forward for your V4L2 Linux driver to fpga conversion! |
Interesting, I wasn't aware of this method. It looks like it's doing the same general thing as the one Martino at Arduino shared: https://github.com/vidor-libraries/USBBlaster. The advantage of that approach is it doesn't require running anything on the FPGA. I also wrote one myself: https://github.com/sameer/usbd-blaster.
👍 sounds good
The act of driving the i2c lines is correct, that much I'm fairly certain of. Since we don't have logic analyzers, I'm thinking a good setup would be:
Me too! I got the IMX477 (Raspberry Pi HD camera) so I'll be trying it out with that when I get some time. |
Hi @sameer,
Thank you for sharing all your work. I find it very helpful and i learn a lot from it.
I saw you mentioned that there is support for imx219 driver at https://github.com/hdl-util/mipi-ccs.
May i know if imx219 driver is working? I tried it but it doesn't seems to show anything from the camera except arduino logo.
I swapped the ov5647 module to imx219 as below:
imx219 #(.INPUT_CLK_RATE(48_000_000), .TARGET_SCL_RATE(100_000)) imx219 (
.clk_in(CLK_48MHZ),
.scl(MIPI_SCL),
.sda(MIPI_SDA),
.mode(mode),
.resolution(resolution),
.format(format),
.ready(ready),
.power_enable(MIPI_GP[0]),
.model_err(model_err),
.nack_err(nack_err)
);
Beside that there is some timing violations during synthesis not sure if this is a problem.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
; Slow 1200mV 85C Model Setup: 'mem_pll|altpll_component|auto_generated|pll1|clk[0]' ;
+--------+-------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------+-----------------------------------------------------+--------------+------------+------------+
; Slack ; From Node ; To Node ; Launch Clock ; Latch Clock ; Relationship ; Clock Skew ; Data Delay ;
+--------+-------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------+-----------------------------------------------------+--------------+------------+------------+
; -2.274 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[5] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][5] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.920 ;
; -2.270 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[7] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][6] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.916 ;
; -2.234 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[5] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][4] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.880 ;
; -2.233 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[6] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][5] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.879 ;
; -2.219 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[6] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][6] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.865 ;
; -2.175 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[3] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][2] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.821 ;
; -2.173 ; arbiter:arbiter|fifo:pixel_read_fifo|receiver[2] ; arbiter:arbiter|fifo:pixel_read_fifo|gray_code_chain:gray_code_chain_receiver|value_chain[0][1] ; hdmi_pll|altpll_component|auto_generated|pll1|clk[0] ; mem_pll|altpll_component|auto_generated|pll1|clk[0] ; 0.771 ; 0.014 ; 2.819 ;
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