fix(PeriphDrivers): Fix CSI2 Line Count Stop Condition

[Jake-Carter]

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Description

Fixes #1147

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• Description of changes and all other relevant information.
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[aniktash]

After testing, I found that with this fix, the last row will be lost.
The proper fix would be to always process the line and reload DMA, but then stop CSI if it is the last line, something like this:

#if 0 // Older version

        if (line_cnt > csi2_state.req->lines_per_frame) {
            // Frame complete
            line_cnt = 0;
            MXC_CSI2_RevA_Stop((mxc_csi2_reva_regs_t *)MXC_CSI2);
            csi2_state.capture_stats.success = true;
            // TODO(Jake): Call frame complete handler here when multi-frame exposures are implemented.
        } else {
            // There is a line to process
            // Swap line buffers and reload DMA
            csi2_state.capture_stats.bytes_captured += line_byte_num;
            _swap_line_buffer();
            MXC_DMA->ch[csi2_state.dma_channel].cnt = line_byte_num;
            MXC_DMA->ch[csi2_state.dma_channel].dst = (uint32_t)lb.active;
            MXC_DMA->ch[csi2_state.dma_channel].ctrl |= MXC_F_DMA_REVA_CTRL_EN;

            if (csi2_state.req->line_handler != NULL) {
                // Call line handler with a pointer to the inactive line buffer
                int error = csi2_state.req->line_handler(lb.inactive, line_byte_num);
                if (error)
				{
						
                    MXC_CSI2_RevA_Stop((mxc_csi2_reva_regs_t *)MXC_CSI2);
				}
            }
        }

#else // suggested fix

		// There is a line to process
		// Swap line buffers and reload DMA
		csi2_state.capture_stats.bytes_captured += line_byte_num;
		_swap_line_buffer();
		MXC_DMA->ch[csi2_state.dma_channel].cnt = line_byte_num;
		MXC_DMA->ch[csi2_state.dma_channel].dst = (uint32_t)lb.active;
		MXC_DMA->ch[csi2_state.dma_channel].ctrl |= MXC_F_DMA_REVA_CTRL_EN;

		if (csi2_state.req->line_handler != NULL) {
			// Call line handler with a pointer to the inactive line buffer
			int error = csi2_state.req->line_handler(lb.inactive, line_byte_num);
			if (error)
			{
					
				MXC_CSI2_RevA_Stop((mxc_csi2_reva_regs_t *)MXC_CSI2);
			}
		}


		if (line_cnt >= csi2_state.req->lines_per_frame) {
			// Frame complete
			line_cnt = 0;

		MXC_CSI2_RevA_Stop((mxc_csi2_reva_regs_t *)MXC_CSI2);
		

			csi2_state.capture_stats.success = true;

		}

#endif

[sihyung-maxim]

Pull in the latest code from main to add the fix for the "Basic Examples Test". The CI has an older ME18 revision attached which does not have the latest cache fix. Eric added this workaround for now until the newest ME18EVKIT revisions are in stock: #1176

[github-actions]

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[github-actions]

This pull request is stale because it has been open for 30 days with no activity. Remove stale label, commit, or comment or this will be closed in 7 days.