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feat: hold the WiFi module in reset until enabled by the firmware (FPGA v8)

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randogoth 2026-10-25 16:13:29 +02:00
parent eaf8cd284a
commit 853addaa22
6 changed files with 24 additions and 9 deletions
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8
fpga/rtl/strix.v
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@ -34,6 +34,8 @@ module strix (
// NINA pass-through: the SAMD21 talks to the WiFi module as if wired directly.
wire nina_enable; // from strix_core
wire sam_nina_mosi = bMKR_D[8]; // SERCOM1
wire sam_nina_sck = bMKR_D[9];
wire sam_nina_ss = bMKR_D[5];
@ -45,7 +47,9 @@ module strix (
assign bWM_PIO29 = sam_nina_sck;
assign bWM_PIO28 = sam_nina_ss;
assign bWM_PIO27 = sam_nina_gpio0;
assign oWM_RESET = sam_nina_resetn;
// The module stays in reset until the firmware enables it: its boot current on top of the
// ring oscillators can brown out the board, and it is not needed without WiFi.
assign oWM_RESET = nina_enable ? sam_nina_resetn : 1'b0;
assign oWM_RX = sam_uart_tx;
assign bWM_PIO1 = 1'bz; // inputs from NINA
assign bWM_PIO7 = 1'bz;
@ -64,7 +68,7 @@ module strix (
strix_core core (
.clk(clk), .reset(reset),
.spi_sck(strix_sck), .spi_mosi(strix_mosi), .spi_ss_n(strix_ss_n),
.spi_miso(strix_miso), .capture_done(capture_done)
.spi_miso(strix_miso), .capture_done(capture_done), .nina_enable(nina_enable)
);
assign oSAM_INT = capture_done;