rmt: check filter and idle threashold

Closes #11262
espressif · Apr 29, 2023 · 9ae742e · 9ae742e
1 parent 15badb7
commit 9ae742e
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Showing 7 changed files with 22 additions and 4 deletions.
diff --git a/components/driver/rmt/rmt_rx.c b/components/driver/rmt/rmt_rx.c
@@ -344,6 +344,11 @@ esp_err_t rmt_receive(rmt_channel_handle_t channel, void *buffer, size_t buffer_
     rmt_hal_context_t *hal = &group->hal;
     int channel_id = channel->channel_id;
 
+    uint32_t filter_reg_value = ((uint64_t)group->resolution_hz * config->signal_range_min_ns) / 1000000000UL;
+    uint32_t idle_reg_value = ((uint64_t)channel->resolution_hz * config->signal_range_max_ns) / 1000000000UL;
+    ESP_RETURN_ON_FALSE(filter_reg_value <= RMT_LL_MAX_FILTER_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_min_ns too big");
+    ESP_RETURN_ON_FALSE(idle_reg_value <= RMT_LL_MAX_IDLE_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_max_ns too big");
+
     // fill in the transaction descriptor
     rmt_rx_trans_desc_t *t = &rx_chan->trans_desc;
     t->buffer = buffer;
@@ -365,9 +370,9 @@ esp_err_t rmt_receive(rmt_channel_handle_t channel, void *buffer, size_t buffer_
     rmt_ll_rx_reset_pointer(hal->regs, channel_id);
     rmt_ll_rx_set_mem_owner(hal->regs, channel_id, RMT_LL_MEM_OWNER_HW);
     // set sampling parameters of incoming signals
-    rmt_ll_rx_set_filter_thres(hal->regs, channel_id, ((uint64_t)group->resolution_hz * config->signal_range_min_ns) / 1000000000UL);
+    rmt_ll_rx_set_filter_thres(hal->regs, channel_id, filter_reg_value);
     rmt_ll_rx_enable_filter(hal->regs, channel_id, config->signal_range_min_ns != 0);
-    rmt_ll_rx_set_idle_thres(hal->regs, channel_id, ((uint64_t)channel->resolution_hz * config->signal_range_max_ns) / 1000000000UL);
+    rmt_ll_rx_set_idle_thres(hal->regs, channel_id, idle_reg_value);
     // turn on RMT RX machine
     rmt_ll_rx_enable(hal->regs, channel_id, true);
     portEXIT_CRITICAL(&channel->spinlock);

diff --git a/components/hal/esp32/include/hal/rmt_ll.h b/components/hal/esp32/include/hal/rmt_ll.h
@@ -32,6 +32,9 @@ extern "C" {
 #define RMT_LL_EVENT_TX_MASK(channel)     (RMT_LL_EVENT_TX_DONE(channel) | RMT_LL_EVENT_TX_THRES(channel) | RMT_LL_EVENT_TX_LOOP_END(channel))
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             65535
+
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,
     RMT_LL_MEM_OWNER_HW = 1,

diff --git a/components/hal/esp32c3/include/hal/rmt_ll.h b/components/hal/esp32c3/include/hal/rmt_ll.h
@@ -33,6 +33,8 @@ extern "C" {
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
 #define RMT_LL_MAX_LOOP_COUNT_PER_BATCH   1023
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             32767
 
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,

diff --git a/components/hal/esp32c6/include/hal/rmt_ll.h b/components/hal/esp32c6/include/hal/rmt_ll.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -34,6 +34,8 @@ extern "C" {
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
 #define RMT_LL_MAX_LOOP_COUNT_PER_BATCH   1023
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             32767
 
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,

diff --git a/components/hal/esp32h2/include/hal/rmt_ll.h b/components/hal/esp32h2/include/hal/rmt_ll.h
@@ -34,6 +34,8 @@ extern "C" {
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
 #define RMT_LL_MAX_LOOP_COUNT_PER_BATCH   1023
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             32767
 
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,

diff --git a/components/hal/esp32s2/include/hal/rmt_ll.h b/components/hal/esp32s2/include/hal/rmt_ll.h
@@ -34,6 +34,8 @@ extern "C" {
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
 #define RMT_LL_MAX_LOOP_COUNT_PER_BATCH   1023
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             65535
 
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,

diff --git a/components/hal/esp32s3/include/hal/rmt_ll.h b/components/hal/esp32s3/include/hal/rmt_ll.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -33,6 +33,8 @@ extern "C" {
 #define RMT_LL_EVENT_RX_MASK(channel)     (RMT_LL_EVENT_RX_DONE(channel) | RMT_LL_EVENT_RX_THRES(channel))
 
 #define RMT_LL_MAX_LOOP_COUNT_PER_BATCH   1023
+#define RMT_LL_MAX_FILTER_VALUE           255
+#define RMT_LL_MAX_IDLE_VALUE             32767
 
 typedef enum {
     RMT_LL_MEM_OWNER_SW = 0,