From d4099d68a78fb97bb921eb851fa72a3e3407624e Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Mon, 19 Jun 2023 07:24:44 +1200
Subject: [PATCH] Use HW SPI for rp2040 (#4955)

---
 esphome/components/spi/spi.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/esphome/components/spi/spi.cpp b/esphome/components/spi/spi.cpp
index 141bfb9448..c9bb075fb5 100644
--- a/esphome/components/spi/spi.cpp
+++ b/esphome/components/spi/spi.cpp
@@ -87,6 +87,30 @@ void SPIComponent::setup() {
     return;
   }
 #endif  // USE_ESP32
+#ifdef USE_RP2040
+  static uint8_t spi_bus_num = 0;
+  if (spi_bus_num >= 2) {
+    use_hw_spi = false;
+  }
+  if (use_hw_spi) {
+    SPIClassRP2040 *spi;
+    if (spi_bus_num == 0) {
+      spi = &SPI;
+    } else {
+      spi = &SPI1;
+    }
+    spi_bus_num++;
+
+    if (miso_pin != -1)
+      spi->setRX(miso_pin);
+    if (mosi_pin != -1)
+      spi->setTX(mosi_pin);
+    spi->setSCK(clk_pin);
+    this->hw_spi_ = spi;
+    this->hw_spi_->begin();
+    return;
+  }
+#endif  // USE_RP2040
 #endif  // USE_SPI_ARDUINO_BACKEND
 
   if (this->miso_ != nullptr) {