final v1

ZigEmbeddedGroup · Feb 17, 2025 · 04c7b61 · 04c7b61
1 parent 83a8d9d
commit 04c7b61
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Showing 2 changed files with 11 additions and 18 deletions.
diff --git a/examples/raspberrypi/rp2xxx/src/spi_master.zig b/examples/raspberrypi/rp2xxx/src/spi_master.zig
@@ -14,29 +14,24 @@ const SCK_PIN = 18;
 // NOTE: rp2xxx doesn't label pins as MOSI/MISO. Instead a pin is always for
 // either receiving or transmitting SPI data, no matter whether the chip is in
 // master or slave mode.
-const RX_PIN = 16;
+const TX_PIN = 19;
 
 // Communicate with another RP2040 over spi
 pub fn main() !void {
     // Set pin functions for CS, SCK, RX
     const csn = rp2xxx.gpio.num(CS_PIN);
-    const miso = rp2xxx.gpio.num(RX_PIN);
+    const mosi = rp2xxx.gpio.num(TX_PIN);
     const sck = rp2xxx.gpio.num(SCK_PIN);
-    inline for (&.{ csn, miso, sck }) |pin| {
+    inline for (&.{ csn, mosi, sck }) |pin| {
         pin.set_function(.spi);
     }
 
-    // 8 bit data words
-    try spi.apply(.{
-        .clock_config = rp2xxx.clock_config,
-        .data_width = .eight,
-        .baud_rate = 500_000,
-    });
-    var out_buf_eight: [BUF_LEN]u8 = .{ 'h', 'e', 'l', 'o' } ** (BUF_LEN / 4);
+    try spi.apply(.{ .clock_config = rp2xxx.clock_config });
+    var out_buf: [BUF_LEN]u8 = .{ 'h', 'e', 'y', ' ', 'y', 'o', 'u', '!' } ** (BUF_LEN / 8);
 
     while (true) {
         std.log.info("Sending some data\n", .{});
-        spi.write_blocking(u8, &out_buf_eight);
+        spi.write_blocking(u8, &out_buf);
         time.sleep_ms(1 * 1000);
     }
 }
diff --git a/examples/raspberrypi/rp2xxx/src/spi_slave.zig b/examples/raspberrypi/rp2xxx/src/spi_slave.zig
@@ -49,16 +49,14 @@ pub fn main() !void {
     std.log.info("Setting SPI as slave device", .{});
     spi.set_slave(true);
 
-    spi.apply(.{
-        .clock_config = rp2xxx.clock_config,
-        .data_width = .eight,
-    }) catch {};
-    var in_buf_eight: [BUF_LEN]u8 = undefined;
+    try spi.apply(.{ .clock_config = rp2xxx.clock_config });
+    var in_buf: [BUF_LEN]u8 = undefined;
+
     std.log.info("Reading", .{});
 
     while (true) {
-        spi.read_blocking(u8, 0, &in_buf_eight);
-        std.log.info("Got: {s}", .{in_buf_eight});
+        spi.read_blocking(u8, 0, &in_buf);
+        std.log.info("Got: {s}", .{in_buf});
         time.sleep_ms(1 * 1000);
     }
 }