![](/media/cache/profiles/f0fcf351df4eb6786e9bb6fc4e2dee02.jpg.50x50_q85.jpg)
Check program for STM32F303K8 System Clock
Fork of study_step0 by
See
https://os.mbed.com/users/kenjiArai/notebook/nucleo-f303k8-hse-clock/#
main.cpp@2:68db9770a517, 2017-09-30 (annotated)
- Committer:
- kenjiArai
- Date:
- Sat Sep 30 21:12:20 2017 +0000
- Revision:
- 2:68db9770a517
- Parent:
- 1:e162361e197f
- Child:
- 3:5cba8c19a04b
Add DBG lines
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kenjiArai | 0:1672d0903bdc | 1 | /* |
kenjiArai | 1:e162361e197f | 2 | * mbed Application program |
kenjiArai | 1:e162361e197f | 3 | * Ckeck program for Clocks only for Nucleo-F303K8 |
kenjiArai | 0:1672d0903bdc | 4 | * |
kenjiArai | 0:1672d0903bdc | 5 | * Copyright (c) 2017 Kenji Arai / JH1PJL |
kenjiArai | 0:1672d0903bdc | 6 | * http://www.page.sannet.ne.jp/kenjia/index.html |
kenjiArai | 0:1672d0903bdc | 7 | * http://mbed.org/users/kenjiArai/ |
kenjiArai | 1:e162361e197f | 8 | * Created: September 28th, 2017 |
kenjiArai | 1:e162361e197f | 9 | * Revised: September 28th, 2017 |
kenjiArai | 0:1672d0903bdc | 10 | */ |
kenjiArai | 0:1672d0903bdc | 11 | |
kenjiArai | 1:e162361e197f | 12 | // Include -------------------------------------------------------------------- |
kenjiArai | 0:1672d0903bdc | 13 | #include "mbed.h" |
kenjiArai | 0:1672d0903bdc | 14 | |
kenjiArai | 1:e162361e197f | 15 | // Object --------------------------------------------------------------------- |
kenjiArai | 0:1672d0903bdc | 16 | DigitalOut my_led(LED1); |
kenjiArai | 1:e162361e197f | 17 | DigitalIn my_sw(USER_BUTTON); |
kenjiArai | 1:e162361e197f | 18 | Serial pc(USBTX, USBRX); |
kenjiArai | 1:e162361e197f | 19 | |
kenjiArai | 1:e162361e197f | 20 | // Definition ----------------------------------------------------------------- |
kenjiArai | 1:e162361e197f | 21 | #define SUCESS_FACTOR |
kenjiArai | 1:e162361e197f | 22 | |
kenjiArai | 1:e162361e197f | 23 | #define BAUD(x) pc.baud(x) |
kenjiArai | 1:e162361e197f | 24 | #define GETC(x) pc.getc(x) |
kenjiArai | 1:e162361e197f | 25 | #define PUTC(x) pc.putc(x) |
kenjiArai | 1:e162361e197f | 26 | #define PRINTF(...) pc.printf(__VA_ARGS__) |
kenjiArai | 1:e162361e197f | 27 | #define READABLE(x) pc.readable(x) |
kenjiArai | 1:e162361e197f | 28 | |
kenjiArai | 1:e162361e197f | 29 | // RAM ------------------------------------------------------------------------ |
kenjiArai | 1:e162361e197f | 30 | |
kenjiArai | 1:e162361e197f | 31 | // ROM / Constant data -------------------------------------------------------- |
kenjiArai | 1:e162361e197f | 32 | char *const cmsg1 = "freq. ="; |
kenjiArai | 1:e162361e197f | 33 | char *const cmsg2 = "Use HSI(internal RC/High speed)"; |
kenjiArai | 1:e162361e197f | 34 | char *const cmsg3 = "Use HSE(External Xtal)"; |
kenjiArai | 2:68db9770a517 | 35 | char *const cmsg4 = ""; |
kenjiArai | 1:e162361e197f | 36 | char *const cmsg5 = "??? following infromation is not valid !"; |
kenjiArai | 1:e162361e197f | 37 | char *const cmsg6 = "clock freq. ="; |
kenjiArai | 1:e162361e197f | 38 | char *const cmsg7 = "fPLL = fPLL-in x PLLMUL"; |
kenjiArai | 1:e162361e197f | 39 | char *const cmsg8 = "fPLL-in(Clock source)is "; |
kenjiArai | 1:e162361e197f | 40 | |
kenjiArai | 1:e162361e197f | 41 | // Function prototypes -------------------------------------------------------- |
kenjiArai | 1:e162361e197f | 42 | void put_rn(void); |
kenjiArai | 1:e162361e197f | 43 | uint8_t disable_pll_and_set_hsi(void); |
kenjiArai | 1:e162361e197f | 44 | void cpu_freq(void); |
kenjiArai | 0:1672d0903bdc | 45 | |
kenjiArai | 1:e162361e197f | 46 | extern void SetSysClock_modify(void); |
kenjiArai | 1:e162361e197f | 47 | extern void SetSysClock_HSE_none_Xtal(void); |
kenjiArai | 1:e162361e197f | 48 | |
kenjiArai | 1:e162361e197f | 49 | //------------------------------------------------------------------------------ |
kenjiArai | 1:e162361e197f | 50 | // Control Program |
kenjiArai | 1:e162361e197f | 51 | //------------------------------------------------------------------------------ |
kenjiArai | 0:1672d0903bdc | 52 | int main() { |
kenjiArai | 1:e162361e197f | 53 | PRINTF("\r\nCheck program for STM32F303K8 System Clock\r\n\r\n"); |
kenjiArai | 1:e162361e197f | 54 | // Output clock on MCO pin(PA8 (D9)) |
kenjiArai | 1:e162361e197f | 55 | // 64 MHz or 8 MHz or 72MHz |
kenjiArai | 1:e162361e197f | 56 | HAL_RCC_MCOConfig(RCC_MCO, RCC_MCOSOURCE_SYSCLK, RCC_MCO_DIV1); |
kenjiArai | 1:e162361e197f | 57 | cpu_freq(); |
kenjiArai | 1:e162361e197f | 58 | PRINTF("Het ant key to go next step\r\n"); |
kenjiArai | 1:e162361e197f | 59 | while(pc.readable()==0){;} |
kenjiArai | 1:e162361e197f | 60 | pc.getc(); //dummy read |
kenjiArai | 1:e162361e197f | 61 | #ifdef SUCESS_FACTOR // Set System clock 8MHz (Direct HSI) |
kenjiArai | 1:e162361e197f | 62 | if(disable_pll_and_set_hsi()){ |
kenjiArai | 1:e162361e197f | 63 | Serial pc(USBTX, USBRX); |
kenjiArai | 1:e162361e197f | 64 | PRINTF("\r\nChanged system clock successfully!!\r\n"); |
kenjiArai | 1:e162361e197f | 65 | cpu_freq(); |
kenjiArai | 1:e162361e197f | 66 | } else { |
kenjiArai | 1:e162361e197f | 67 | PRINTF("\r\nNo Change!!\r\n"); |
kenjiArai | 1:e162361e197f | 68 | cpu_freq(); |
kenjiArai | 1:e162361e197f | 69 | } |
kenjiArai | 1:e162361e197f | 70 | #else |
kenjiArai | 1:e162361e197f | 71 | PRINTF("Skip 8MHz mode then next 72MHz clcok may not success!!\r\n"); |
kenjiArai | 1:e162361e197f | 72 | #endif |
kenjiArai | 1:e162361e197f | 73 | PRINTF("Het ant key to go next step\r\n"); |
kenjiArai | 1:e162361e197f | 74 | while(pc.readable()==0){;} |
kenjiArai | 1:e162361e197f | 75 | pc.getc(); //dummy read |
kenjiArai | 1:e162361e197f | 76 | SetSysClock_HSE_none_Xtal(); |
kenjiArai | 1:e162361e197f | 77 | Serial pc(USBTX, USBRX); |
kenjiArai | 1:e162361e197f | 78 | cpu_freq(); |
kenjiArai | 1:e162361e197f | 79 | PRINTF("Hit any key to restart\r\n"); |
kenjiArai | 0:1672d0903bdc | 80 | while(1) { |
kenjiArai | 0:1672d0903bdc | 81 | my_led = !my_led; |
kenjiArai | 1:e162361e197f | 82 | if (pc.readable()){ |
kenjiArai | 1:e162361e197f | 83 | NVIC_SystemReset(); |
kenjiArai | 1:e162361e197f | 84 | } |
kenjiArai | 1:e162361e197f | 85 | wait(1.0f); |
kenjiArai | 0:1672d0903bdc | 86 | } |
kenjiArai | 0:1672d0903bdc | 87 | } |
kenjiArai | 1:e162361e197f | 88 | |
kenjiArai | 1:e162361e197f | 89 | uint8_t disable_pll_and_set_hsi(void){ |
kenjiArai | 1:e162361e197f | 90 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
kenjiArai | 1:e162361e197f | 91 | /* Select PLL as system clock source |
kenjiArai | 1:e162361e197f | 92 | and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
kenjiArai | 1:e162361e197f | 93 | RCC_ClkInitStruct.ClockType = |
kenjiArai | 1:e162361e197f | 94 | (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | |
kenjiArai | 1:e162361e197f | 95 | RCC_CLOCKTYPE_PCLK2); |
kenjiArai | 1:e162361e197f | 96 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI; // 8 MHz |
kenjiArai | 1:e162361e197f | 97 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 8 MHz |
kenjiArai | 1:e162361e197f | 98 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; // 8 MHz |
kenjiArai | 1:e162361e197f | 99 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 8 MHz |
kenjiArai | 1:e162361e197f | 100 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { |
kenjiArai | 1:e162361e197f | 101 | return 0; // FAIL |
kenjiArai | 1:e162361e197f | 102 | } |
kenjiArai | 1:e162361e197f | 103 | RCC->CR &= 0xfeffffff; // Disable PLL |
kenjiArai | 1:e162361e197f | 104 | return 1; |
kenjiArai | 1:e162361e197f | 105 | } |
kenjiArai | 1:e162361e197f | 106 | |
kenjiArai | 1:e162361e197f | 107 | void cpu_freq(void) |
kenjiArai | 1:e162361e197f | 108 | { |
kenjiArai | 1:e162361e197f | 109 | uint32_t m1 = 0, m2 = 0, m3 = 0, m4 = 0; |
kenjiArai | 1:e162361e197f | 110 | |
kenjiArai | 1:e162361e197f | 111 | PRINTF("--- Clocks related Reg.(RCC->?) ---"); put_rn(); |
kenjiArai | 1:e162361e197f | 112 | PRINTF("CR = 0x%08x", RCC->CR); put_rn(); |
kenjiArai | 1:e162361e197f | 113 | PRINTF("CFGR = 0x%08x", RCC->CFGR); put_rn(); |
kenjiArai | 1:e162361e197f | 114 | PRINTF("CIR = 0x%08x", RCC->CIR); put_rn(); |
kenjiArai | 1:e162361e197f | 115 | PRINTF("APB2RSTR = 0x%08x", RCC->APB2RSTR); put_rn(); |
kenjiArai | 1:e162361e197f | 116 | PRINTF("APB1RSTR = 0x%08x", RCC->APB1RSTR); put_rn(); |
kenjiArai | 1:e162361e197f | 117 | PRINTF("AHB1ENR = 0x%08x", RCC->AHBENR); put_rn(); |
kenjiArai | 1:e162361e197f | 118 | PRINTF("APB2ENR = 0x%08x", RCC->APB2ENR); put_rn(); |
kenjiArai | 1:e162361e197f | 119 | PRINTF("APB1ENR = 0x%08x", RCC->APB1ENR); put_rn(); |
kenjiArai | 1:e162361e197f | 120 | PRINTF("APB1LPENR= 0x%08x", RCC->BDCR); put_rn(); |
kenjiArai | 1:e162361e197f | 121 | PRINTF("CSR = 0x%08x", RCC->CSR); put_rn(); |
kenjiArai | 1:e162361e197f | 122 | PRINTF("AHBRSTR = 0x%08x", RCC->AHBRSTR); put_rn(); |
kenjiArai | 1:e162361e197f | 123 | PRINTF("CFGR2 = 0x%08x", RCC->CFGR2); put_rn(); |
kenjiArai | 1:e162361e197f | 124 | PRINTF("CFGR3 = 0x%08x", RCC->CFGR3); put_rn(); |
kenjiArai | 1:e162361e197f | 125 | put_rn(); |
kenjiArai | 1:e162361e197f | 126 | m1 = (RCC->CFGR & RCC_CFGR_SWS) >> RCC_CFGR_SWS_Pos; /* Get SYSCLK source */ |
kenjiArai | 1:e162361e197f | 127 | switch (m1) { |
kenjiArai | 1:e162361e197f | 128 | case 0x00: // HSI used as system clock |
kenjiArai | 2:68db9770a517 | 129 | PRINTF( "%s, %s %uHz", cmsg2, cmsg1, HSI_VALUE ); |
kenjiArai | 1:e162361e197f | 130 | m2 = HSI_VALUE; |
kenjiArai | 1:e162361e197f | 131 | break; |
kenjiArai | 1:e162361e197f | 132 | case 0x01: // HSE used as system clock |
kenjiArai | 2:68db9770a517 | 133 | PRINTF( "%s, %s %uHz", cmsg3, cmsg1, HSE_VALUE ); |
kenjiArai | 1:e162361e197f | 134 | m2 = HSE_VALUE; |
kenjiArai | 1:e162361e197f | 135 | break; |
kenjiArai | 1:e162361e197f | 136 | case 0x02: // PLL used as system clock |
kenjiArai | 1:e162361e197f | 137 | PRINTF(cmsg7); |
kenjiArai | 1:e162361e197f | 138 | put_rn(); |
kenjiArai | 1:e162361e197f | 139 | m1 = (RCC->CFGR & RCC_CFGR_PLLSRC) >> RCC_CFGR_PLLSRC_Pos; |
kenjiArai | 1:e162361e197f | 140 | PRINTF(cmsg8); |
kenjiArai | 1:e162361e197f | 141 | if (m1 == 0){ |
kenjiArai | 1:e162361e197f | 142 | m3 = HSI_VALUE / 2; |
kenjiArai | 1:e162361e197f | 143 | PRINTF("HSI/2 -> fPLL-in = %uHz", m3); |
kenjiArai | 1:e162361e197f | 144 | } else { |
kenjiArai | 1:e162361e197f | 145 | m2 = (RCC->CFGR2 & RCC_CFGR2_PREDIV); |
kenjiArai | 1:e162361e197f | 146 | m2 += 1; |
kenjiArai | 1:e162361e197f | 147 | m3 = HSE_VALUE / m2; |
kenjiArai | 1:e162361e197f | 148 | PRINTF("HSE/PREDIV(=%u) -> fPLL-in = %uHz", m2, m3); |
kenjiArai | 1:e162361e197f | 149 | } |
kenjiArai | 1:e162361e197f | 150 | put_rn(); |
kenjiArai | 1:e162361e197f | 151 | PRINTF(cmsg4); |
kenjiArai | 1:e162361e197f | 152 | m4 = (RCC->CFGR & RCC_CFGR_PLLMUL) >> RCC_CFGR_PLLMUL_Pos; |
kenjiArai | 1:e162361e197f | 153 | m4 += 2; |
kenjiArai | 1:e162361e197f | 154 | if (m4 > 16){ |
kenjiArai | 1:e162361e197f | 155 | m4 = 16; |
kenjiArai | 1:e162361e197f | 156 | } |
kenjiArai | 1:e162361e197f | 157 | PRINTF("PLLMUL = %u", m4); |
kenjiArai | 1:e162361e197f | 158 | put_rn(); |
kenjiArai | 1:e162361e197f | 159 | PRINTF("fPLL = fPLL-in x PLLMUL = %u x %u = %uHz", m3, m4, m3*m4); |
kenjiArai | 1:e162361e197f | 160 | break; |
kenjiArai | 1:e162361e197f | 161 | default: // Not come here |
kenjiArai | 1:e162361e197f | 162 | PRINTF(cmsg5); |
kenjiArai | 1:e162361e197f | 163 | break; |
kenjiArai | 1:e162361e197f | 164 | } |
kenjiArai | 1:e162361e197f | 165 | put_rn(); |
kenjiArai | 1:e162361e197f | 166 | PRINTF( "SYSCLK %s%10dHz", cmsg6, HAL_RCC_GetSysClockFreq()); |
kenjiArai | 1:e162361e197f | 167 | put_rn(); |
kenjiArai | 1:e162361e197f | 168 | PRINTF( "HCLK %s%10dHz", cmsg6, HAL_RCC_GetHCLKFreq()); |
kenjiArai | 1:e162361e197f | 169 | put_rn(); |
kenjiArai | 1:e162361e197f | 170 | PRINTF( "PCLK1 %s%10dHz", cmsg6, HAL_RCC_GetPCLK1Freq()); |
kenjiArai | 1:e162361e197f | 171 | put_rn(); |
kenjiArai | 1:e162361e197f | 172 | PRINTF( "PCLK2 %s%10dHz", cmsg6, HAL_RCC_GetPCLK2Freq()); |
kenjiArai | 1:e162361e197f | 173 | put_rn(); |
kenjiArai | 1:e162361e197f | 174 | put_rn(); |
kenjiArai | 1:e162361e197f | 175 | } |
kenjiArai | 1:e162361e197f | 176 | |
kenjiArai | 1:e162361e197f | 177 | void put_rn(void) |
kenjiArai | 1:e162361e197f | 178 | { |
kenjiArai | 1:e162361e197f | 179 | PUTC('\r'); |
kenjiArai | 1:e162361e197f | 180 | PUTC('\n'); |
kenjiArai | 1:e162361e197f | 181 | } |