diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F405xx.py b/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F405xx.py
index f0b7e3a7ea..5b7441ad26 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F405xx.py
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F405xx.py
@@ -154,7 +154,14 @@ AltFunction_map = {
 	"PB14:TIM1_CH2N"    	:	1,
 	"PB14:TIM8_CH2N"    	:	3,
 	"PB14:USART3_RTS"   	:	7,
+	"PB15:RTC_REFIN"    	:	0,
+	"PB15:TIM1_CH3N"    	:	1,
+	"PB15:TIM8_CH3N"    	:	3,
 	"PB15:SPI2_MOSI"    	:	5,
+	"PB15:I2S2_SD"    	:	5,
+	"PB15:TIM12_CH2"    	:	9,
+	"PB15:OTG_HS_DP"    	:	12,
+	"PB15:EVENTOUT"    	:	15,
 	"PB1:ETH_MII_RXD3"  	:	11,
 	"PB1:EVENTOUT"      	:	15,
 	"PB1:OTG_HS_ULPI_D2"	:	10,
@@ -182,8 +189,8 @@ AltFunction_map = {
 	"PB5:I2C1_SMBA"     	:	4,
 	"PB5:OTG_HS_ULPI_D7"	:	10,
 	"PB5:SPI1_MOSI"     	:	5,
-        "PB5:SPI3_MOSI"         :       6,
-        "PB5:I2S3_SD"		:	6,
+	"PB5:SPI3_MOSI"     	:	6,
+	"PB5:I2S3_SD"       	:	6,
 	"PB5:TIM3_CH2"      	:	2,
 	"PB6:CAN2_TX"       	:	9,
 	"PB6:DCMI_D5"       	:	13,
@@ -239,6 +246,7 @@ AltFunction_map = {
 	"PC12:USART3_CK"    	:	7,
 	"PC13:EVENTOUT"     	:	15,
 	"PC14:EVENTOUT"     	:	15,
+	"PC15:EVENTOUT"     	:	15,
 	"PC1:ETH_MDC"       	:	11,
 	"PC1:EVENTOUT"      	:	15,
 	"PC2:ETH_MII_TXD2"  	:	11,
@@ -285,6 +293,9 @@ AltFunction_map = {
 	"PC9:SDIO_D1"       	:	12,
 	"PC9:TIM3_CH4"      	:	2,
 	"PC9:TIM8_CH4"      	:	3,
+	"PD0:CAN1_RX"       	:	9,
+	"PD0:EVENTOUT"      	:	15,
+	"PD0:FSMC_D2"       	:	12,
 	"PD10:EVENTOUT"     	:	15,
 	"PD10:FSMC_D15"     	:	12,
 	"PD10:USART3_CK"    	:	7,
@@ -353,6 +364,9 @@ AltFunction_map = {
 	"PE14:EVENTOUT"     	:	15,
 	"PE14:FSMC_D11"     	:	12,
 	"PE14:TIM1_CH4"     	:	1,
+	"PE15:TIM1_BKIN"    	:	1,
+	"PE15:FSMC_D12"    	:	12,
+	"PE15:EVENTOUT"    	:	1,
 	"PE1:DCMI_D3"       	:	13,
 	"PE1:EVENTOUT"      	:	15,
 	"PE1:FSMC_NBL1"     	:	12,
@@ -399,6 +413,8 @@ AltFunction_map = {
 	"PF13:FSMC_A7"      	:	12,
 	"PF14:EVENTOUT"     	:	15,
 	"PF14:FSMC_A8"      	:	12,
+	"PF15:EVENTOUT"     	:	15,
+	"PF15:FSMC_A9"      	:	12,
 	"PF1:EVENTOUT"      	:	15,
 	"PF1:FSMC_A1"       	:	12,
 	"PF1:I2C2_SCL"      	:	4,
@@ -445,6 +461,9 @@ AltFunction_map = {
 	"PG14:EVENTOUT"     	:	15,
 	"PG14:FSMC_A25"     	:	12,
 	"PG14:USART6_TX"    	:	8,
+	"PG15:USART6_CTS"    	:	8,
+	"PG15:DCMI_D13"    	:	13,
+	"PG15:EVENTOUT"    	:	15,
 	"PG1:EVENTOUT"      	:	15,
 	"PG1:FSMC_A11"      	:	12,
 	"PG2:EVENTOUT"      	:	15,
@@ -467,6 +486,7 @@ AltFunction_map = {
 	"PG9:FSMC_NCE3"     	:	12,
 	"PG9:FSMC_NE2"      	:	12,
 	"PG9:USART6_RX"     	:	8,
+	"PH0:EVENTOUT"      	:	15,
 	"PH10:DCMI_D1"      	:	13,
 	"PH10:EVENTOUT"     	:	15,
 	"PH10:TIM5_CH1"     	:	2,