From c71db50a27600885ea4e84d9744a4a4417af02c6 Mon Sep 17 00:00:00 2001 From: David Shah Date: Fri, 17 Nov 2017 11:27:40 +0000 Subject: Add UltraPlus LED driver support and demo --- examples/up5k_rgb/rgb.v | 81 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 examples/up5k_rgb/rgb.v (limited to 'examples/up5k_rgb/rgb.v') diff --git a/examples/up5k_rgb/rgb.v b/examples/up5k_rgb/rgb.v new file mode 100644 index 0000000..c83b943 --- /dev/null +++ b/examples/up5k_rgb/rgb.v @@ -0,0 +1,81 @@ +module top( + output RGB0, RGB1, RGB2 +); + +wire clk; + +SB_HFOSC inthosc ( + .CLKHFPU(1'b1), + .CLKHFEN(1'b1), + .CLKHF(clk) +); + +localparam counter_width = 30; + +reg [counter_width-1:0] ctr; + +always@(posedge clk) +begin + ctr <= ctr + 1; +end + +localparam pwm_width = 12; + +localparam pwm_max = (2**pwm_width) - 1; +localparam pwm_max_div4 = (2**(pwm_width-2)) - 1; + + +wire [1:0] phase = ctr[counter_width - 1 : counter_width - 2]; +wire [pwm_width-1:0] fade = ctr[counter_width - 3 : counter_width - (2 + pwm_width)]; +wire [pwm_width-1:0] fade_div4 = ctr[counter_width - 3 : counter_width - (pwm_width)]; + +wire [pwm_width-1:0] r_val, g_val, b_val; + +// Fade R->G->B->W-> +assign r_val = (phase == 0) ? pwm_max_div4 + (3 * fade_div4) : + (phase == 1) ? pwm_max - fade : + (phase == 3) ? fade_div4 : + 0; + +assign g_val = (phase == 0) ? pwm_max_div4 - fade_div4: + (phase == 1) ? fade : + (phase == 2) ? pwm_max - fade : + (phase == 3) ? fade_div4 : + 0; + +assign b_val = (phase == 0) ? pwm_max_div4 - fade_div4: + (phase == 2) ? fade : + (phase == 3) ? pwm_max - (3 * fade_div4) : + 0; + +reg [pwm_width-1:0] pwm_ctr; + +reg pwm_r, pwm_g, pwm_b; + +always@(posedge clk) +begin + pwm_ctr <= pwm_ctr + 1; + pwm_r <= (pwm_ctr < r_val) ? 1'b1 : 1'b0; + pwm_g <= (pwm_ctr < g_val) ? 1'b1 : 1'b0; + pwm_b <= (pwm_ctr < b_val) ? 1'b1 : 1'b0; +end + +SB_RGBA_DRV RGBA_DRIVER ( + .CURREN(1'b1), + .RGBLEDEN(1'b1), + .RGB0PWM(pwm_g), + .RGB1PWM(pwm_b), + .RGB2PWM(pwm_r), + .RGB0(RGB0), + .RGB1(RGB1), + .RGB2(RGB2) +); + + +defparam RGBA_DRIVER.CURRENT_MODE = "0b1"; +defparam RGBA_DRIVER.RGB0_CURRENT = "0b000001"; +defparam RGBA_DRIVER.RGB1_CURRENT = "0b000011"; +defparam RGBA_DRIVER.RGB2_CURRENT = "0b000011"; + + +endmodule \ No newline at end of file -- cgit v1.2.3 From da7a2a9d0db95d6a172286eaddd6e930a27ea752 Mon Sep 17 00:00:00 2001 From: David Shah Date: Mon, 20 Nov 2017 09:43:54 +0000 Subject: Fix whitespace and a couple of typos --- examples/up5k_rgb/rgb.v | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'examples/up5k_rgb/rgb.v') diff --git a/examples/up5k_rgb/rgb.v b/examples/up5k_rgb/rgb.v index c83b943..81920cb 100644 --- a/examples/up5k_rgb/rgb.v +++ b/examples/up5k_rgb/rgb.v @@ -78,4 +78,4 @@ defparam RGBA_DRIVER.RGB1_CURRENT = "0b000011"; defparam RGBA_DRIVER.RGB2_CURRENT = "0b000011"; -endmodule \ No newline at end of file +endmodule -- cgit v1.2.3 From 9184fbdf404c0e94326919c92a27d3292994cdf1 Mon Sep 17 00:00:00 2001 From: David Shah Date: Mon, 20 Nov 2017 09:51:03 +0000 Subject: Tidy up 5k examples --- examples/up5k_rgb/rgb.v | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'examples/up5k_rgb/rgb.v') diff --git a/examples/up5k_rgb/rgb.v b/examples/up5k_rgb/rgb.v index 81920cb..fa29fba 100644 --- a/examples/up5k_rgb/rgb.v +++ b/examples/up5k_rgb/rgb.v @@ -10,7 +10,7 @@ SB_HFOSC inthosc ( .CLKHF(clk) ); -localparam counter_width = 30; +localparam counter_width = 32; reg [counter_width-1:0] ctr; @@ -73,9 +73,9 @@ SB_RGBA_DRV RGBA_DRIVER ( defparam RGBA_DRIVER.CURRENT_MODE = "0b1"; -defparam RGBA_DRIVER.RGB0_CURRENT = "0b000001"; -defparam RGBA_DRIVER.RGB1_CURRENT = "0b000011"; -defparam RGBA_DRIVER.RGB2_CURRENT = "0b000011"; +defparam RGBA_DRIVER.RGB0_CURRENT = "0b000111"; +defparam RGBA_DRIVER.RGB1_CURRENT = "0b000111"; +defparam RGBA_DRIVER.RGB2_CURRENT = "0b000111"; endmodule -- cgit v1.2.3