From 127c9424229a854f97fbe6a5a46e9124647b220e Mon Sep 17 00:00:00 2001
From: Tomasz Duda <tomaszduda23@gmail.com>
Date: Wed, 21 Feb 2024 20:31:36 +0100
Subject: [PATCH] remove ring buffer

---
 .../components/zephyr_uart/ring_buffer.cpp    | 58 -------------------
 esphome/components/zephyr_uart/ring_buffer.h  | 20 -------
 2 files changed, 78 deletions(-)
 delete mode 100644 esphome/components/zephyr_uart/ring_buffer.cpp
 delete mode 100644 esphome/components/zephyr_uart/ring_buffer.h

diff --git a/esphome/components/zephyr_uart/ring_buffer.cpp b/esphome/components/zephyr_uart/ring_buffer.cpp
deleted file mode 100644
index 0b0027efe1..0000000000
--- a/esphome/components/zephyr_uart/ring_buffer.cpp
+++ /dev/null
@@ -1,58 +0,0 @@
-#include "ring_buffer.h"
-#include <zephyr/drivers/uart.h>
-
-#ifndef CONFIG_UART_INTERRUPT_DRIVEN
-#error "CONFIG_UART_INTERRUPT_DRIVEN is required"
-#endif
-
-//   while (true) {
-//     uart_line_ctrl_get(dev, UART_LINE_CTRL_DTR, &dtr);
-//     if (dtr) {
-//       break;
-//     } else {
-//       /* Give CPU resources to low priority threads. */
-//       k_sleep(K_MSEC(100));
-//     }
-//   }
-
-// }
-
-namespace esphome {
-namespace zephyr_uart {
-
-void RingBuffer::setup(const device *dev, uint8_t *ring_buffer, uint32_t size) {
-  dev_ = dev;
-  ring_buf_init(&ringbuf_, size, ring_buffer);
-  uart_irq_callback_user_data_set(dev, interrupt_handler_, this);
-}
-
-uint32_t RingBuffer::fill(const char *data, uint32_t size) {
-  // TODO block if no space
-  uint32_t rb_len = ring_buf_put(&ringbuf_, reinterpret_cast<const uint8_t*>(data), size);
-  if (rb_len) {
-    uart_irq_tx_enable(dev_);
-  }
-  return rb_len;
-}
-
-void RingBuffer::interrupt_handler_(const device *dev, void *user_data) {
-  auto thiz = static_cast<RingBuffer *>(user_data);
-  while (uart_irq_update(dev) && uart_irq_is_pending(dev)) {
-    if (uart_irq_tx_ready(dev)) {
-      uint8_t buffer[64];
-      int rb_len, send_len;
-
-      rb_len = ring_buf_get(&thiz->ringbuf_, buffer, sizeof(buffer));
-      if (!rb_len) {
-        uart_irq_tx_disable(dev);
-        continue;
-      }
-
-      uart_fifo_fill(dev, buffer, rb_len);
-      // TODO add blocking
-    }
-  }
-}
-
-}  // namespace zephyr_uart
-}  // namespace esphome
diff --git a/esphome/components/zephyr_uart/ring_buffer.h b/esphome/components/zephyr_uart/ring_buffer.h
deleted file mode 100644
index 70f602a66d..0000000000
--- a/esphome/components/zephyr_uart/ring_buffer.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#pragma once
-#include <zephyr/sys/ring_buffer.h>
-
-class device;
-
-namespace esphome {
-namespace zephyr_uart {
-
-class RingBuffer {
- public:
-  void setup(const device *dev, uint8_t *ring_buffer, uint32_t size);
-  uint32_t fill(const char* data, uint32_t size);
- protected:
-  static void interrupt_handler_(const device *dev, void *user_data);
-  ring_buf ringbuf_;
-  const device *dev_ = {nullptr};
-};
-
-}  // namespace zephyr_uart
-}  // namespace esphome