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stmhal: Set STM32F7DISC CPU Frequency to 216 MHz

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This set the CPU frequency to 216 MHz (the max) and
leaves the USB Frequency at 48 MHz.

These settings were copied from one of the HAL examples.
This commit is contained in:
Dave Hylands 2016-09-02 13:22:49 -07:00 committed by Damien George
parent 2d8740a4d1
commit fedab995ee
1 changed files with 10 additions and 3 deletions
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13
stmhal/boards/STM32F7DISC/mpconfigboard.h
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@ -20,12 +20,19 @@
void STM32F7DISC_board_early_init(void); void STM32F7DISC_board_early_init(void);
// HSE is 25MHz // HSE is 25MHz
// VCOClock = HSE * PLLN / PLLM = 25 MHz * 432 / 25 = 432 MHz
// SYSCLK = VCOClock / PLLP = 432 MHz / 2 = 216 MHz
// USB/SDMMC/RNG Clock = VCOClock / PLLQ = 432 MHz / 9 = 48 MHz
#define MICROPY_HW_CLK_PLLM (25) #define MICROPY_HW_CLK_PLLM (25)
#define MICROPY_HW_CLK_PLLN (336) #define MICROPY_HW_CLK_PLLN (432)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2) #define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7) #define MICROPY_HW_CLK_PLLQ (9)
#define MICROPY_HW_FLASH_LATENCY FLASH_LATENCY_6 // From the reference manual, for 2.7V to 3.6V
// 151-180 MHz => 5 wait states
// 181-210 MHz => 6 wait states
// 211-216 MHz => 7 wait states
#define MICROPY_HW_FLASH_LATENCY FLASH_LATENCY_7 // 210-216 MHz needs 7 wait states
// UART config // UART config
#define MICROPY_HW_UART1_TX_PORT (GPIOA) #define MICROPY_HW_UART1_TX_PORT (GPIOA)