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stm32: use stm32-rs SVDs which are of much higher quality

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This commit changes the number of wait states for the stm32f103 chip to
2 instead of 4. This gets it back in line with the datasheet, but it
also has the side effect of breaking I2C. Therefore, another (seemingly
unrelated) change is needed: the i2cTimeout constant must be increased
to a higher value to adjust to the lower flash wait states - presumably
because the lower number of wait states allows the chip to run code
faster.
This commit is contained in:
Ayke van Laethem
2020-12-29 13:14:00 +01:00
committed by Ron Evans
parent 65caf777dd
commit 154c7c691b
24 changed files with 259 additions and 333 deletions
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src/runtime/runtime_stm32f7x2.go
+3 -3
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@@ -93,9 +93,9 @@ func initOsc() {
stm32.RCC.PLLCFGR.Set(0x20000000 |
(1 << stm32.RCC_PLLCFGR_PLLSRC_Pos) | // 1 = HSE
PLL_M |
(PLL_N << stm32.RCC_PLLCFGR_PLLN0_Pos) |
(((PLL_P >> 1) - 1) << stm32.RCC_PLLCFGR_PLLP0_Pos) |
(PLL_Q << stm32.RCC_PLLCFGR_PLLQ0_Pos))
(PLL_N << stm32.RCC_PLLCFGR_PLLN_Pos) |
(((PLL_P >> 1) - 1) << stm32.RCC_PLLCFGR_PLLP_Pos) |
(PLL_Q << stm32.RCC_PLLCFGR_PLLQ_Pos))
// Enable the PLL, wait until ready
stm32.RCC.CR.SetBits(stm32.RCC_CR_PLLON)