alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-17 23:28:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(uart): add RCC atomic block to uart/lp-uart peripheral

Browse Source
This commit is contained in:
gaoxu
2023-09-14 09:23:20 +08:00
parent c7afa0dcef
commit 4541ad134d
21 changed files with 643 additions and 168 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
components/hal/esp32c3/include/hal/uart_ll.h
View File

@@ -15,6 +15,7 @@
#include "hal/uart_types.h"
#include "soc/uart_reg.h"
#include "soc/uart_struct.h"
#include "soc/system_struct.h"
#include "esp_attr.h"
#ifdef __cplusplus
@@ -97,6 +98,60 @@ FORCE_INLINE_ATTR void uart_ll_sclk_disable(uart_dev_t *hw)
hw->clk_conf.tx_sclk_en = 0;
}
/**
* @brief Enable the bus clock for uart
* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
* @param enable true to enable, false to disable
*/
static inline void uart_ll_enable_bus_clock(uart_port_t uart_num, bool enable)
{
switch (uart_num)
{
case 0:
SYSTEM.perip_clk_en0.reg_uart_clk_en = enable;
break;
case 1:
SYSTEM.perip_clk_en0.reg_uart1_clk_en = enable;
break;
case 2:
SYSTEM.perip_clk_en1.reg_uart2_clk_en = enable;
break;
default:
abort();
break;
}
}
// SYSTEM.perip_clk_enx are shared registers, so this function must be used in an atomic way
#define uart_ll_enable_bus_clock(...) (void)__DECLARE_RCC_ATOMIC_ENV; uart_ll_enable_bus_clock(__VA_ARGS__)
/**
* @brief Reset UART module
* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
*/
static inline void uart_ll_reset_register(uart_port_t uart_num)
{
switch (uart_num)
{
case 0:
SYSTEM.perip_rst_en0.reg_uart_rst = 1;
SYSTEM.perip_rst_en0.reg_uart_rst = 0;
break;
case 1:
SYSTEM.perip_rst_en0.reg_uart1_rst = 1;
SYSTEM.perip_rst_en0.reg_uart1_rst = 0;
break;
case 2:
SYSTEM.perip_rst_en1.reg_uart2_rst = 1;
SYSTEM.perip_rst_en1.reg_uart2_rst = 0;
break;
default:
abort();
break;
}
}
// SYSTEM.perip_rst_enx are shared registers, so this function must be used in an atomic way
#define uart_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; uart_ll_reset_register(__VA_ARGS__)
/**
* @brief Set the UART source clock.
*