Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-10-03 03:31:41 +03:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'feat/rng_support_h21' into 'master'

Browse Source 
H21 RNG support

Closes IDF-11503

See merge request espressif/esp-idf!50061
This commit is contained in:
Gao Xu
2026-08-05 14:15:43 +08:00
parent d9f42b3fc6 d31a63d246
commit db9e5b4d31
5 changed files with 90 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/hal/esp32h21/include/hal/rng_ll.h
+66 -2
View File
@@ -6,26 +6,90 @@
#pragma once
#include <stdbool.h>
#include <stdint.h>
#include "soc/soc.h"
#include "soc/lpperi_reg.h"
#include "soc/wdev_reg.h"
#include "soc/lpperi_struct.h"
#include "hal/lp_clkrst_ll.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Read random data from RNG
*
* @return 32-bit random data
*/
static inline uint32_t rng_ll_read_data(void)
{
return REG_READ(LPPERI_RNG_DATA_REG);
return REG_READ(WDEV_RND_REG);
}
/* For compatibility. */
/**
* @brief Enable or disable RNG sampling.
*
* @param enable True to enable, False to disable
*/
static inline void rng_ll_enable_sample(bool enable)
{
LPPERI.rng_cfg.rng_sample_enable = enable;
}
/**
* @brief Enable or disable rng xor rtc timer.
*
* @param enable True to enable, False to disable
*/
static inline void rng_ll_enable_rtc_timer(bool enable)
{
LPPERI.rng_cfg.rtc_timer_en = enable ? 0x3 : 0x0;
}
/**
* @brief Enable or disable rng xor async rng timer.
*
* @param enable True to enable, False to disable
*/
static inline void rng_ll_enable_rng_timer(bool enable)
{
LPPERI.rng_cfg.rng_timer_en = enable;
}
/**
* @brief Reset RNG.
*/
static inline void rng_ll_reset(void)
{
// ESP32-H21 does not expose a dedicated RNG reset bit.
}
/**
* @brief Enable RNG module
*
* TODO: unify in rng_hal.c
*/
static inline void rng_ll_enable(void)
{
_lp_clkrst_ll_enable_rng_clock(true);
rng_ll_enable_sample(true);
rng_ll_enable_rtc_timer(false);
rng_ll_enable_rng_timer(false);
}
/**
* @brief Disable RNG module
*
* TODO: unify in rng_hal.c
*/
static inline void rng_ll_disable(void)
{
rng_ll_enable_sample(false);
rng_ll_enable_rtc_timer(false);
rng_ll_enable_rng_timer(false);
_lp_clkrst_ll_enable_rng_clock(false);
}
#ifdef __cplusplus