use OCXO, and auto fail-over between different clock sources

1 files changed, 18 insertions, 1 deletions

diff --git a/app/main.c b/app/main.c
index 229674e..6116a5b 100644
--- a/app/main.c
+++ b/app/main.c
@@ -28,11 +28,28 @@ static void cmd_dispatch()
   }
 }
 
+static const clock_scale_t hse_10mhz_3v3_168 = {
+  /* 168MHz */
+  .pllm = 10,
+  .plln = 336,
+  .pllp = 2,
+  .pllq = 7,
+  .hpre = RCC_CFGR_HPRE_DIV_NONE,
+  .ppre1 = RCC_CFGR_PPRE_DIV_4,
+  .ppre2 = RCC_CFGR_PPRE_DIV_2,
+  .flash_config = FLASH_ACR_ICE | FLASH_ACR_DCE |
+  FLASH_ACR_LATENCY_5WS,
+  .apb1_frequency = 42000000,
+  .apb2_frequency = 84000000,
+};
+
+
 
 static void
 board_setup (void)
 {
-  rcc_clock_setup_hse_3v3 (&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
+  rcc_osc_bypass_enable (HSE);
+  rcc_clock_setup_hse_3v3 (&hse_10mhz_3v3_168);
 
   rcc_periph_clock_enable (RCC_SYSCFG);
   rcc_periph_clock_enable (RCC_GPIOA);