address review comments

crypto-aes
Dan Halbert 3 years ago
parent 1e11f2708b
commit ae64a669dd

@ -213,17 +213,17 @@ void frequencyin_samd51_start_dpll() {
// Will also enable the Lock Bypass due to low-frequency sources causing DPLL unlocks
// as outlined in the Errata (1.12.1)
OSCCTRL->Dpll[1].DPLLRATIO.reg = OSCCTRL_DPLLRATIO_LDRFRAC(0) | OSCCTRL_DPLLRATIO_LDR(2999);
if (BOARD_HAS_CRYSTAL) { // we can use XOSC32K directly as the source
OSC32KCTRL->XOSC32K.bit.EN32K = 1;
OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_REFCLK(1) |
OSCCTRL_DPLLCTRLB_LBYPASS;
} else {
// can't use OSCULP32K directly; need to setup a GCLK as a reference,
// which must be done in samd/clocks.c to avoid waiting for sync
return;
//OSC32KCTRL->OSCULP32K.bit.EN32K = 1;
//OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_REFCLK(0);
}
#if BOARD_HAS_CRYSTAL
// we can use XOSC32K directly as the source
OSC32KCTRL->XOSC32K.bit.EN32K = 1;
OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_REFCLK(1) | OSCCTRL_DPLLCTRLB_LBYPASS;
#else
// can't use OSCULP32K directly; need to setup a GCLK as a reference,
// which must be done in samd/clocks.c to avoid waiting for sync
return;
//OSC32KCTRL->OSCULP32K.bit.EN32K = 1;
//OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_REFCLK(0);
#endif
OSCCTRL->Dpll[1].DPLLCTRLA.reg = OSCCTRL_DPLLCTRLA_ENABLE;
while (!(OSCCTRL->Dpll[1].DPLLSTATUS.bit.LOCK || OSCCTRL->Dpll[1].DPLLSTATUS.bit.CLKRDY)) {}

@ -5,21 +5,13 @@ This is a port of CircuitPython to the Nordic Semiconductor nRF52 series of chip
> **NOTE**: There are board-specific READMEs that may be more up to date than the
generic board-neutral documentation below.
## Compile and Flash
Prerequisite steps for building the nrf port:
git clone <URL>.git circuitpython
cd circuitpython
git submodule update --init --recursive
make -C mpy-cross
## Flash
Some boards have UF2 bootloaders and can simply be flashed in the normal way, by copying
firmware.uf2 to the BOOT drive.
To build and flash issue the following command inside the ports/nrf/ folder:
For some boards, you can use the `flash` target:
make BOARD=pca10056
make BOARD=pca10056 flash
## Segger Targets

@ -59,8 +59,8 @@ const nvm_bytearray_obj_t common_hal_bleio_nvm_obj = {
.base = {
.type = &nvm_bytearray_type,
},
.len = CIRCUITPY_BLE_CONFIG_SIZE,
.start_address = (uint8_t*) CIRCUITPY_BLE_CONFIG_START_ADDR,
.len = CIRCUITPY_BLE_CONFIG_SIZE,
};
STATIC void softdevice_assert_handler(uint32_t id, uint32_t pc, uint32_t info) {

@ -81,12 +81,10 @@
// firmware
// internal CIRCUITPY flash filesystem (optional)
// BLE config (bonding info, etc.) (optional)
// microntroller.nvm (optional)
// microcontroller.nvm (optional)
// bootloader (note the MBR at 0x0 redirects to the bootloader here, in high flash)
// bootloader settings
// Bootloader values from https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/src/linker/s140_v6.ld
// Define these regions starting up from the bottom of flash:
#define MBR_START_ADDR (0x0)
@ -101,6 +99,7 @@
// Define these regions starting down from the bootloader:
// Bootloader values from https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/src/linker/s140_v6.ld
#define BOOTLOADER_START_ADDR (0x000F4000)
#define BOOTLOADER_SIZE (0xA000) // 40kiB
#define BOOTLOADER_SETTINGS_START_ADDR (0x000FF000)

@ -33,4 +33,4 @@
#define FLASH_PAGE_SIZE (0x4000)
#define DEFAULT_I2C_BUS_SCL (&pin_PB10)
#define DEFAULT_I2C_BUS_SDA (&pin_PB09)
#define DEFAULT_I2C_BUS_SDA (&pin_PB09)

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