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[Board] Adafruit Trinket (#333)

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* Add support for Adafruit Trinket-M0 board
This commit is contained in:
Martin Treml
2019-05-14 19:30:39 +02:00
committed by Ron Evans
parent e0cf74e638
commit fc2ed2bdd0
10 changed files with 1103 additions and 612 deletions
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src/runtime/runtime_atsamd21.go
-53
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@@ -293,59 +293,6 @@ func handleRTC() {
timerWakeup = true
}
func initSERCOMClocks() {
// Turn on clock to SERCOM0 for UART0
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM0_
// Use GCLK0 for SERCOM0 aka UART0
// GCLK_CLKCTRL_ID( clockId ) | // Generic Clock 0 (SERCOMx)
// GCLK_CLKCTRL_GEN_GCLK0 | // Generic Clock Generator 0 is source
// GCLK_CLKCTRL_CLKEN ;
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM0_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
// Turn on clock to SERCOM1
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM1_
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM1_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
// Turn on clock to SERCOM2
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM2_
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM2_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
// Turn on clock to SERCOM3
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM3_
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM3_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
// Turn on clock to SERCOM4
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM4_
// Use GCLK0 for SERCOM4
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM4_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
// Turn on clock to SERCOM5
sam.PM.APBCMASK |= sam.PM_APBCMASK_SERCOM5_
// Use GCLK0 for SERCOM5
sam.GCLK.CLKCTRL = sam.RegValue16((sam.GCLK_CLKCTRL_ID_SERCOM5_CORE << sam.GCLK_CLKCTRL_ID_Pos) |
(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
sam.GCLK_CLKCTRL_CLKEN)
waitForSync()
}
func initUSBClock() {
// Turn on clock for USB
sam.PM.APBBMASK |= sam.PM_APBBMASK_USB_