diff options
| -rw-r--r-- | src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c b/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c index 101698f17..0f0858b1b 100644 --- a/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c +++ b/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c @@ -66,15 +66,15 @@ // 2000 0000 to 203F FFFF #define SRAM_REGION 0x20000000 -/* Although device controller are the same. DMA of - * - M0/M+ can only transfer up to nbytes = 64 - * - M3/M4 can transfer nbytes = 1023 (maximum) +/* Although device controller are the same. Somehow only LPC134x can execute + * DMA with 1023 bytes for Bulk/Control. Others (11u, 51u, 54xxx) can only work + * with max 64 bytes */ enum { - #ifdef __ARM_ARCH_6M__ // Cortex M0/M0+ - DMA_NBYTES_MAX = 64 - #else + #if CFG_TUSB_MCU == OPT_MCU_LPC13XX DMA_NBYTES_MAX = 1023 + #else + DMA_NBYTES_MAX = 64 #endif }; |