RCC API Reference
RCC Structures
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struct wm_drv_clock_ctx_t
RCC API
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int wm_drv_clock_enable(wm_device_t *dev, uint32_t module_type)
Set the rcc clock enable.
- Parameters:
dev – [in] clock device pointer
module_type – [in] config the indicate module clock enable, please refer to #wm_rcc_clock_enable_t
- Returns:
WM_ERR_SUCCESS: succeed
others: failed
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int wm_drv_clock_disable(wm_device_t *dev, uint32_t module_type)
Set the rcc clock disable.
- Parameters:
dev – [in] clock device pointer
module_type – [in] config the indicate module clock disable, please refer to #wm_rcc_clock_enable_t
- Returns:
WM_ERR_SUCCESS: succeed
others: failed
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int wm_drv_clock_reset(wm_device_t *dev, uint32_t module_type)
Set the rcc clock reset.
- Parameters:
dev – [in] clock device pointer
module_type – [in] config the indicate module clock reset, please refer to #wm_rcc_clk_rst_t
- Returns:
WM_ERR_SUCCESS: succeed
others: failed
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wm_device_t *wm_drv_clock_init(char *dev_name)
Initialize clock driver.
- Parameters:
dev_name – clock device name
- Returns:
clock device pointer: succeed
NULL : failed
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int wm_drv_clock_deinit(wm_device_t *dev)
deinit flash driver
- Parameters:
dev – clock driver device
- Returns:
WM_ERR_SUCCESS: succeed
others: failed
- Returns:
WM_ERR_SUCCESS: succeed
WM_ERR_INVALID_PARAM: invalid argument
others: failed
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int wm_drv_rcc_config_clock(wm_device_t *dev, wm_rcc_type_t module_type, uint16_t MHz)
Set the rcc clock.
Note
The Periphal/WLAN/CPU clock should be a divider of PLL clock(480MHz), others value is invalid; The SD ADC clock should be a divider of 40MHz; The wlan clock should be 160MHz to work normal; The CPU clock should above 40MHz to make wifi work, and maxmum clock is 240MHz; The QFLASH clock should be 40MHz or 80MHz; The GPSEC clock should be 80MHz or 160MHz; The RSA clock should be 80MHz or 160MHz; No need to config APB clock, used for query;
- Parameters:
dev – [in] clock device pointer
module_type – [in] config the indicate module clock, please refer to #wm_rcc_type_t
MHz – [in] the clock setting, unit: MHz
- Returns:
WM_ERR_SUCCESS: succeed
others: failed
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int wm_drv_rcc_get_config_clock(wm_device_t *dev, wm_rcc_type_t module_type)
Get the rcc clock.
- Parameters:
dev – [in] clock device pointer
module_type – [in] config the clock module, please refer to #wm_rcc_type_t
- Returns:
module clock: succeed
others: failed
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int32_t wm_drv_rcc_set_i2s_clock(wm_device_t *dev, bool extal_en, bool mclk_en, uint32_t mclk_div, uint32_t bclk_div)
Set the I2S clock of RCC.
- Parameters:
dev – [in] clock device pointer
extal_en – [in] true if enable clock from extal crystal, otherwise use internal PLL
mclk_en – [in] true if enable mclk function, otherwise disable
mclk_div – [in] divider value for mclk, range [2, 64]
bclk_div – [in] divider value for bclk, range [1, 1024]
- Returns:
module clock: succeed
others: failed