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Code Issues Releases Wiki Activity

SAML21 minor stuff

This commit is contained in:
Gregory Nutt 2015-06-14 14:27:58 -06:00
parent d9e90fc1ac
commit 1933260618
3 changed files with 6 additions and 3 deletions
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2
TODO
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@ -1080,7 +1080,7 @@ o USB (drivers/usbdev, drivers/usbhost)
channels. channels.
This works okay until you add a hub and try connect multiple This works okay until you add a hub and try connect multiple
devices. A typical device will require 3-4 pipe and, hence, devices. A typical device will require 3-4 pipes and, hence,
4-5 channels. This effectively prevents using a hub with the 4-5 channels. This effectively prevents using a hub with the
STM32 devices. This also applies to the EFM32 which uses the STM32 devices. This also applies to the EFM32 which uses the
same IP. same IP.

5
arch/arm/src/samdl/sam_dmac.c
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@ -803,9 +803,10 @@ void weak_function up_dmainitialize(void)
putreg32((uint32_t)g_base_desc, SAM_DMAC_BASEADDR); putreg32((uint32_t)g_base_desc, SAM_DMAC_BASEADDR);
putreg32((uint32_t)g_writeback_desc, SAM_DMAC_WRBADDR); putreg32((uint32_t)g_writeback_desc, SAM_DMAC_WRBADDR);
/* Enable the DMA controller */ /* Enable the DMA controller and all priority levels */
putreg16(DMAC_CTRL_DMAENABLE, SAM_DMAC_CTRL); putreg16(DMAC_CTRL_DMAENABLE | DMAC_CTRL_LVLEN0 | DMAC_CTRL_LVLEN1 |
DMAC_CTRL_LVLEN2, SAM_DMAC_CTRL);
/* Enable the IRQ at the NVIC (still disabled at the DMA controller) */ /* Enable the IRQ at the NVIC (still disabled at the DMA controller) */

2
configs/saml21-xplained/README.txt
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@ -32,6 +32,8 @@ STATUS/ISSUES
configuration is working well with the serial console provided by configuration is working well with the serial console provided by
SERCOM4 as 115200 8N1. SERCOM4 as 115200 8N1.
- 2015-6-14: Added a DMAC driver. There is no way to verify it at present.
Modules Modules
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