ChibiOS 2.6.8, until I can figure out where to get it from git.

2025-12-11 01:02:38 +00:00 · 2015-07-08 08:40:23 -07:00
parent dc6fee8370
commit e1eea8e08a
1929 changed files with 575326 additions and 0 deletions
--- a/firmware/chibios/os/hal/platforms/AT91SAM7/at91sam7_mii.c
+++ b/firmware/chibios/os/hal/platforms/AT91SAM7/at91sam7_mii.c
@@ -0,0 +1,144 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    AT91SAM7/at91sam7_mii.c
+ * @brief   AT91SAM7 low level MII driver code.
+ *
+ * @addtogroup AT91SAM7_MII
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+#include "at91sam7_mii.h"
+
+#if HAL_USE_MAC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Low level MII driver initialization.
+ *
+ * @notapi
+ */
+void miiInit(void) {
+
+}
+
+/**
+ * @brief   Resets a PHY device.
+ *
+ * @param[in] macp      pointer to the @p MACDriver object
+ *
+ * @notapi
+ */
+void miiReset(MACDriver *macp) {
+
+  (void)macp;
+
+  /*
+   * Disables the pullups on all the pins that are latched on reset by the PHY.
+   */
+  AT91C_BASE_PIOB->PIO_PPUDR = PHY_LATCHED_PINS;
+
+#ifdef PIOB_PHY_PD_MASK
+  /*
+   * PHY power control.
+   */
+  AT91C_BASE_PIOB->PIO_OER = PIOB_PHY_PD_MASK;  /* Becomes an output.       */
+  AT91C_BASE_PIOB->PIO_PPUDR = PIOB_PHY_PD_MASK;/* Default pullup disabled. */
+#if (PHY_HARDWARE == PHY_DAVICOM_9161)
+  AT91C_BASE_PIOB->PIO_CODR = PIOB_PHY_PD_MASK; /* Output to low level.     */
+#else
+  AT91C_BASE_PIOB->PIO_SODR = PIOB_PHY_PD_MASK; /* Output to high level.    */
+#endif
+#endif
+
+  /*
+   * PHY reset by pulsing the NRST pin.
+   */
+  AT91C_BASE_RSTC->RSTC_RMR = 0xA5000100;
+  AT91C_BASE_RSTC->RSTC_RCR = 0xA5000000 | AT91C_RSTC_EXTRST;
+  while (!(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_NRSTL))
+    ;
+}
+
+/**
+ * @brief   Reads a PHY register through the MII interface.
+ *
+ * @param[in] macp      pointer to the @p MACDriver object
+ * @param[in] addr      the register address
+ * @return              The register value.
+ *
+ * @notapi
+ */
+phyreg_t miiGet(MACDriver *macp, phyaddr_t addr) {
+
+  (void)macp;
+  AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) |            /* SOF */
+                              (0b10 << 28) |            /* RW */
+                              (PHY_ADDRESS << 23) |     /* PHYA */
+                              (addr << 18) |            /* REGA */
+                              (0b10 << 16);             /* CODE */
+  while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
+    ;
+  return (phyreg_t)(AT91C_BASE_EMAC->EMAC_MAN & 0xFFFF);
+}
+
+/**
+ * @brief   Writes a PHY register through the MII interface.
+ *
+ * @param[in] macp      pointer to the @p MACDriver object
+ * @param[in] addr      the register address
+ * @param[in] value     the new register value
+ *
+ * @notapi
+ */
+void miiPut(MACDriver *macp, phyaddr_t addr, phyreg_t value) {
+
+  (void)macp;
+  AT91C_BASE_EMAC->EMAC_MAN = (0b01 << 30) |            /* SOF */
+                              (0b01 << 28) |            /* RW */
+                              (PHY_ADDRESS << 23) |     /* PHYA */
+                              (addr << 18) |            /* REGA */
+                              (0b10 << 16) |            /* CODE */
+                              value;
+  while (!( AT91C_BASE_EMAC->EMAC_NSR & AT91C_EMAC_IDLE))
+    ;
+}
+
+#endif /* HAL_USE_MAC */
+
+/** @} */