Добавить переносимый драйвер parallel NAND

2026-09-04 12:22:21 +03:00
commit 1f1006bf2a
21 changed files with 1429 additions and 0 deletions
--- a/ports/stm32f407ve/parallel_nand_port_stm32f407ve.c
+++ b/ports/stm32f407ve/parallel_nand_port_stm32f407ve.c
@@ -0,0 +1,93 @@
+#include "parallel_nand_port_stm32f407ve.h"
+#include "stm32f4xx_hal.h"
+#include "stm32f4xx_hal_nand.h"
+
+#define PNAND_F407_BANK2_BASE  0x70000000UL
+#define PNAND_F407_CMD_AREA    (1UL << 16)
+#define PNAND_F407_ADDR_AREA   (1UL << 17)
+
+static NAND_HandleTypeDef hnand;
+
+static int f407_init(void)
+{
+    GPIO_InitTypeDef io;
+    FSMC_NAND_PCC_TimingTypeDef common;
+    FSMC_NAND_PCC_TimingTypeDef attribute;
+
+    __HAL_RCC_GPIOD_CLK_ENABLE();
+    __HAL_RCC_GPIOE_CLK_ENABLE();
+    __HAL_RCC_FSMC_CLK_ENABLE();
+
+    io.Mode = GPIO_MODE_AF_PP;
+    io.Pull = GPIO_NOPULL;
+    io.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    io.Alternate = GPIO_AF12_FSMC;
+    io.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 |
+             GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_11 | GPIO_PIN_12 |
+             GPIO_PIN_14 | GPIO_PIN_15;
+    HAL_GPIO_Init(GPIOD, &io);
+    io.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10;
+    HAL_GPIO_Init(GPIOE, &io);
+
+    hnand.Instance = FSMC_NAND_DEVICE;
+    hnand.Init.NandBank = FSMC_NAND_BANK2;
+    hnand.Init.Waitfeature = FSMC_NAND_PCC_WAIT_FEATURE_DISABLE;
+    hnand.Init.MemoryDataWidth = FSMC_NAND_PCC_MEM_BUS_WIDTH_8;
+    hnand.Init.EccComputation = FSMC_NAND_ECC_DISABLE;
+    hnand.Init.ECCPageSize = FSMC_NAND_ECC_PAGE_SIZE_2048BYTE;
+    hnand.Init.TCLRSetupTime = 2U;
+    hnand.Init.TARSetupTime = 2U;
+
+    common.SetupTime = 2U;
+    common.WaitSetupTime = 5U;
+    common.HoldSetupTime = 3U;
+    common.HiZSetupTime = 2U;
+    attribute = common;
+    return HAL_NAND_Init(&hnand, &common, &attribute) == HAL_OK ? 0 : -1;
+}
+
+static void f407_select(void) { /* FSMC_NCE2 активируется доступом. */ }
+static void f407_deselect(void) { }
+static void f407_write_command(pnand_octet_t value)
+{
+    *(__IO uint8_t *)(PNAND_F407_BANK2_BASE | PNAND_F407_CMD_AREA) =
+        (uint8_t)value;
+}
+static void f407_write_address(pnand_octet_t value)
+{
+    *(__IO uint8_t *)(PNAND_F407_BANK2_BASE | PNAND_F407_ADDR_AREA) =
+        (uint8_t)value;
+}
+static void f407_write_data(pnand_octet_t value)
+{
+    *(__IO uint8_t *)PNAND_F407_BANK2_BASE = (uint8_t)value;
+}
+static pnand_octet_t f407_read_data(void)
+{
+    return *(__IO uint8_t *)PNAND_F407_BANK2_BASE;
+}
+static int f407_is_ready(void)
+{
+    return HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_6) == GPIO_PIN_SET;
+}
+static void f407_set_wp(int enabled)
+{
+    /* WP# аппаратный в базовой схеме. */
+    (void)enabled;
+}
+static void f407_delay_us(unsigned long us)
+{
+    uint32_t cycles = (SystemCoreClock / 3000000UL) * (uint32_t)us;
+    while (cycles-- != 0U) __NOP();
+}
+
+static const parallel_nand_port_t f407_port = {
+    f407_init, f407_select, f407_deselect,
+    f407_write_command, f407_write_address, f407_write_data,
+    f407_read_data, f407_is_ready, f407_set_wp, f407_delay_us
+};
+
+const parallel_nand_port_t *parallel_nand_port_stm32f407ve(void)
+{
+    return &f407_port;
+}