- Replace all users of `$(RIOTBASE)/build` with the already present
`$(BUILD_DIR)` variable
- Replace all users of `$(BUILD_DIR)/pkg` with the already present
`$(PKGDIRBASE)` variable
- Create a `CACHEDIR.TAG` file in the `$(BUILD_DIR)`
Normally, CMSIS headers are retrieved as package from ST git repository
for each stm32.
However stm32mp1 family does not have a CMSIS headers repository but
have been included into RIOT source code in a previous commit.
For stm32mp1, CMSIS headers package must then not be retrieved and
vectors have to be generated from already in-source CMSIS headers.
Signed-off-by: Gilles DOFFE <gilles.doffe@savoirfairelinux.com>
clk_conf is a useful tool to produce clock headers for new boards.
But it only supports STM32Fx families.
This commits add the definition of a new family: STM32MP1.
Only the STM32MP157 is supported for now.
First build clk_conf:
$ make -C cpu/stm32/dist/clk_conf/
Clock header can be generated with the following command once clk_conf is
built:
$ cpu/stm32/dist/clk_conf/clk_conf stm32mp157 208000000 24000000 1
This command line will produce a core clock of 208MHz with a 24MHz HSE
oscillator and will use LSE clock which corresponds to the STM32MP157C-DK2
board configuration.
The command will output the header to copy paste into the periph_conf.h of
the board:
/**
* @name Clock settings
*
* @note This is auto-generated from
* `cpu/stm32/dist/clk_conf/clk_conf.c`
* @{
*/
/* give the target core clock (HCLK) frequency [in Hz],
* maximum: 209MHz */
#define CLOCK_CORECLOCK (208000000U)
/* 0: no external high speed crystal available
* else: actual crystal frequency [in Hz] */
#define CLOCK_HSE (24000000U)
/* 0: no external low speed crystal available,
* 1: external crystal available (always 32.768kHz) */
#define CLOCK_LSE (1U)
/* peripheral clock setup */
#define CLOCK_MCU_DIV RCC_MCUDIVR_MCUDIV_1 /* max 209MHz */
#define CLOCK_MCU (CLOCK_CORECLOCK / 1)
#define CLOCK_APB1_DIV RCC_APB1DIVR_APB1DIV_2 /* max 104MHz */
#define CLOCK_APB1 (CLOCK_CORECLOCK / 2)
#define CLOCK_APB2_DIV RCC_APB2DIVR_APB2DIV_2 /* max 104MHz */
#define CLOCK_APB2 (CLOCK_CORECLOCK / 2)
#define CLOCK_APB3_DIV RCC_APB3DIVR_APB3DIV_2 /* max 104MHz */
#define CLOCK_APB3 (CLOCK_CORECLOCK / 2)
/* Main PLL factors */
#define CLOCK_PLL_M (2)
#define CLOCK_PLL_N (52)
#define CLOCK_PLL_P (3)
#define CLOCK_PLL_Q (13)
/** @} */
This result has been verified with STM32CubeMX, the official ST tool.
Signed-off-by: Gilles DOFFE <gilles.doffe@savoirfairelinux.com>
In some CMSIS headers, "typedef enum" could be preceded by white
spaces. Thus consider them when parsing the line.
Signed-off-by: Gilles DOFFE <gilles.doffe@savoirfairelinux.com>
