mirror of
https://github.com/espressif/esp-idf.git
synced 2024-09-20 00:36:01 -04:00
feat(hal): add util function to reverse a 8bit byte
This commit is contained in:
parent
3de31924ac
commit
e92a1515be
@ -18,6 +18,7 @@
|
||||
#include "esp_check.h"
|
||||
#include "driver/rmt_encoder.h"
|
||||
#include "rmt_private.h"
|
||||
#include "hal/hal_utils.h"
|
||||
|
||||
static const char *TAG = "rmt";
|
||||
|
||||
@ -46,15 +47,6 @@ static esp_err_t rmt_bytes_encoder_reset(rmt_encoder_t *encoder)
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
__attribute__((always_inline))
|
||||
static inline uint8_t _bitwise_reverse(uint8_t n)
|
||||
{
|
||||
n = ((n & 0xf0) >> 4) | ((n & 0x0f) << 4);
|
||||
n = ((n & 0xcc) >> 2) | ((n & 0x33) << 2);
|
||||
n = ((n & 0xaa) >> 1) | ((n & 0x55) << 1);
|
||||
return n;
|
||||
}
|
||||
|
||||
static size_t IRAM_ATTR rmt_encode_bytes(rmt_encoder_t *encoder, rmt_channel_handle_t channel,
|
||||
const void *primary_data, size_t data_size, rmt_encode_state_t *ret_state)
|
||||
{
|
||||
@ -98,7 +90,7 @@ static size_t IRAM_ATTR rmt_encode_bytes(rmt_encoder_t *encoder, rmt_channel_han
|
||||
uint8_t cur_byte = nd[byte_index];
|
||||
// bit-wise reverse
|
||||
if (bytes_encoder->flags.msb_first) {
|
||||
cur_byte = _bitwise_reverse(cur_byte);
|
||||
cur_byte = hal_utils_bitwise_reverse8(cur_byte);
|
||||
}
|
||||
while ((len > 0) && (bit_index < 8)) {
|
||||
if (cur_byte & (1 << bit_index)) {
|
||||
|
@ -10,6 +10,7 @@
|
||||
#include <stdbool.h>
|
||||
#include "hal/assert.h"
|
||||
#include "hal/misc.h"
|
||||
#include "hal/hal_utils.h"
|
||||
#include "hal/gdma_types.h"
|
||||
#include "hal/gdma_ll.h"
|
||||
#include "soc/ahb_dma_struct.h"
|
||||
@ -558,7 +559,7 @@ static inline void ahb_dma_ll_tx_crc_set_lfsr_data_mask(ahb_dma_dev_t *dev, uint
|
||||
dev->out_crc[channel].crc_data_en_addr.tx_crc_data_en_addr_chn = crc_bit;
|
||||
if (reverse_data_mask) {
|
||||
// "& 0xff" because the hardware only support 8-bit data
|
||||
data_mask = _bitwise_reverse(data_mask & 0xFF);
|
||||
data_mask = hal_utils_bitwise_reverse8(data_mask & 0xFF);
|
||||
}
|
||||
HAL_FORCE_MODIFY_U32_REG_FIELD(dev->out_crc[channel].crc_data_en_wr_data, tx_crc_data_en_wr_data_chn, data_mask);
|
||||
}
|
||||
@ -619,7 +620,7 @@ static inline void ahb_dma_ll_rx_crc_set_lfsr_data_mask(ahb_dma_dev_t *dev, uint
|
||||
dev->in_crc[channel].crc_data_en_addr.rx_crc_data_en_addr_chn = crc_bit;
|
||||
if (reverse_data_mask) {
|
||||
// "& 0xff" because the hardware only support 8-bit data
|
||||
data_mask = _bitwise_reverse(data_mask & 0xFF);
|
||||
data_mask = hal_utils_bitwise_reverse8(data_mask & 0xFF);
|
||||
}
|
||||
HAL_FORCE_MODIFY_U32_REG_FIELD(dev->in_crc[channel].crc_data_en_wr_data, rx_crc_data_en_wr_data_chn, data_mask);
|
||||
}
|
||||
|
@ -10,6 +10,7 @@
|
||||
#include <stdbool.h>
|
||||
#include "hal/assert.h"
|
||||
#include "hal/misc.h"
|
||||
#include "hal/hal_utils.h"
|
||||
#include "hal/gdma_types.h"
|
||||
#include "hal/gdma_ll.h"
|
||||
#include "soc/axi_dma_struct.h"
|
||||
@ -504,7 +505,7 @@ static inline void axi_dma_ll_tx_crc_set_lfsr_data_mask(axi_dma_dev_t *dev, uint
|
||||
dev->out[channel].crc.tx_crc_data_en_addr.tx_crc_data_en_addr_chn = crc_bit;
|
||||
if (reverse_data_mask) {
|
||||
// "& 0xff" because the hardware only support 8-bit data
|
||||
data_mask = _bitwise_reverse(data_mask & 0xFF);
|
||||
data_mask = hal_utils_bitwise_reverse8(data_mask & 0xFF);
|
||||
}
|
||||
HAL_FORCE_MODIFY_U32_REG_FIELD(dev->out[channel].crc.tx_crc_data_en_wr_data, tx_crc_data_en_wr_data_chn, data_mask);
|
||||
}
|
||||
@ -565,7 +566,7 @@ static inline void axi_dma_ll_rx_crc_set_lfsr_data_mask(axi_dma_dev_t *dev, uint
|
||||
dev->in[channel].crc.rx_crc_data_en_addr.rx_crc_data_en_addr_chn = crc_bit;
|
||||
if (reverse_data_mask) {
|
||||
// "& 0xff" because the hardware only support 8-bit data
|
||||
data_mask = _bitwise_reverse(data_mask & 0xFF);
|
||||
data_mask = hal_utils_bitwise_reverse8(data_mask & 0xFF);
|
||||
}
|
||||
HAL_FORCE_MODIFY_U32_REG_FIELD(dev->in[channel].crc.rx_crc_data_en_wr_data, rx_crc_data_en_wr_data_chn, data_mask);
|
||||
}
|
||||
|
@ -82,15 +82,6 @@ static inline void gdma_ll_reset_register(int group_id)
|
||||
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
|
||||
#define gdma_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; gdma_ll_reset_register(__VA_ARGS__)
|
||||
|
||||
__attribute__((always_inline))
|
||||
static inline uint8_t _bitwise_reverse(uint8_t n)
|
||||
{
|
||||
n = ((n & 0xf0) >> 4) | ((n & 0x0f) << 4);
|
||||
n = ((n & 0xcc) >> 2) | ((n & 0x33) << 2);
|
||||
n = ((n & 0xaa) >> 1) | ((n & 0x55) << 1);
|
||||
return n;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
@ -85,6 +85,21 @@ uint32_t hal_utils_calc_clk_div_frac_accurate(const hal_utils_clk_info_t *clk_in
|
||||
*/
|
||||
uint32_t hal_utils_calc_clk_div_integer(const hal_utils_clk_info_t *clk_info, uint32_t *int_div);
|
||||
|
||||
/**
|
||||
* @brief Reverse the bit order of an 8-bit unsigned integer
|
||||
*
|
||||
* @param n The 8-bit unsigned integer to be reversed
|
||||
* @return The 8-bit unsigned integer after reversing
|
||||
*/
|
||||
__attribute__((always_inline))
|
||||
static inline uint8_t hal_utils_bitwise_reverse8(uint8_t n)
|
||||
{
|
||||
n = ((n & 0xf0) >> 4) | ((n & 0x0f) << 4);
|
||||
n = ((n & 0xcc) >> 2) | ((n & 0x33) << 2);
|
||||
n = ((n & 0xaa) >> 1) | ((n & 0x55) << 1);
|
||||
return n;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
@ -1,5 +1,6 @@
|
||||
idf_component_register(SRCS "test_app_main.c"
|
||||
"test_calc_clk_div.c"
|
||||
"test_hal_utils_misc.c"
|
||||
INCLUDE_DIRS "."
|
||||
REQUIRES unity hal
|
||||
WHOLE_ARCHIVE)
|
||||
|
@ -0,0 +1,21 @@
|
||||
/*
|
||||
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include "unity.h"
|
||||
#include "hal/hal_utils.h"
|
||||
|
||||
TEST_CASE("test_hal_utils_bitwise_reverse", "[bit_ops]")
|
||||
{
|
||||
uint8_t input_data[] = {0x00, 0x0F, 0xAA, 0x55, 0xC3};
|
||||
uint8_t expected_data[] = {0x00, 0xF0, 0x55, 0xAA, 0xC3};
|
||||
int num_test_cases = sizeof(input_data) / sizeof(input_data[0]);
|
||||
|
||||
for (int i = 0; i < num_test_cases; i++) {
|
||||
uint8_t result = hal_utils_bitwise_reverse8(input_data[i]);
|
||||
TEST_ASSERT_EQUAL_HEX8(expected_data[i], result);
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue
Block a user