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UART buffers for F4 should not be in CCM DATA RAM for DMA to work

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This commit is contained in:
jflyper 2019-09-18 05:44:51 +09:00
parent 031a21b9fc
commit ff72647486
2 changed files with 67 additions and 12 deletions
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5
src/main/drivers/serial_uart_impl.h
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@ -170,7 +170,7 @@ typedef struct uartHardware_s {
uint8_t txPriority;
uint8_t rxPriority;
#ifdef STM32H7
#if defined(STM32H7) || defined(STM32F4)
volatile uint8_t *txBuffer;
volatile uint8_t *rxBuffer;
uint16_t txBufferSize;
@ -188,8 +188,9 @@ typedef struct uartDevice_s {
const uartHardware_t *hardware;
uartPinDef_t rx;
uartPinDef_t tx;
#ifdef STM32H7
#if defined(STM32H7) || defined(STM32F4)
// For H7, buffers with possible DMA access is placed in D2 SRAM.
// For F4, buffers should NOT be in CCM DATA RAM (uartDevice is).
volatile uint8_t *rxBuffer;
volatile uint8_t *txBuffer;
#else