changeset 124:4b355396557a FlipDisplay

Change GPIO speed for SPI communication as recommended by STM32 Errata
author Ideenmodellierer
date Sun, 27 Jan 2019 22:17:16 +0100 (2019-01-27)
parents a984d87a1ec0
children 626191e1fed1
files Discovery/Src/stm32f4xx_hal_msp_hw2.c Small_CPU/Src/spi.c
diffstat 2 files changed, 3 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/Discovery/Src/stm32f4xx_hal_msp_hw2.c	Sun Jan 27 22:01:07 2019 +0100
+++ b/Discovery/Src/stm32f4xx_hal_msp_hw2.c	Sun Jan 27 22:17:16 2019 +0100
@@ -298,7 +298,7 @@
     GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;//GPIO_SPEED_LOW;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FAST; /* Decision is based on errata which recomments FAST for GPIO at 90Mhz */
     GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
     GPIO_InitStruct.Pin = GPIO_PIN_4;
@@ -393,7 +393,7 @@
     GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;//GPIO_SPEED_LOW;
+    GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; //GPIO_SPEED_MEDIUM;//GPIO_SPEED_LOW;
     GPIO_InitStruct.Alternate = GPIO_AF5_SPI5;
     HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
 
--- a/Small_CPU/Src/spi.c	Sun Jan 27 22:01:07 2019 +0100
+++ b/Small_CPU/Src/spi.c	Sun Jan 27 22:17:16 2019 +0100
@@ -157,7 +157,7 @@
 //    GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
 		GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 		GPIO_InitStruct.Pull = GPIO_PULLUP;
-		GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;
+		GPIO_InitStruct.Speed = GPIO_SPEED_FAST; /* Decision is based on errata which recommends FAST for GPIO at 90Mhz */
 		GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
 		HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);