stm32: Support PA11/PA12 pin remap on stm32f042 tsop20 chip

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-10-15 17:45:48 -04:00
parent a6d90bb95e
commit 0b0c47c566
2 changed files with 12 additions and 0 deletions
--- a/src/stm32/stm32f0.c
+++ b/src/stm32/stm32f0.c
@@ -159,4 +159,12 @@ clock_setup(void)
        hsi48_setup();
    else
        pll_setup();
+
+    // Support alternate USB pins on stm32f042
+#ifdef SYSCFG_CFGR1_PA11_PA12_RMP
+    if (CONFIG_STM32F042_USB_PIN_SWAP) {
+        enable_pclock(SYSCFG_BASE);
+        SYSCFG->CFGR1 |= SYSCFG_CFGR1_PA11_PA12_RMP;
+    }
+#endif
 }