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-rw-r--r--src/lpc/altos-loader.ld80
-rw-r--r--src/lpc/altos-standalone.ld85
-rw-r--r--src/lpc/altos.ld26
-rw-r--r--src/lpc/ao_adc_lpc.c68
-rw-r--r--src/lpc/ao_arch.h4
-rw-r--r--src/lpc/ao_arch_funcs.h32
-rw-r--r--src/lpc/ao_boot.h39
-rw-r--r--src/lpc/ao_boot_chain.c67
-rw-r--r--src/lpc/ao_boot_pin.c46
-rw-r--r--src/lpc/ao_flash.h30
-rw-r--r--src/lpc/ao_flash_loader_lpc.c32
-rw-r--r--src/lpc/ao_flash_lpc_pins.h32
-rw-r--r--src/lpc/ao_interrupt.c27
-rw-r--r--src/lpc/ao_spi_lpc.c2
-rw-r--r--src/lpc/ao_timer_lpc.c35
-rw-r--r--src/lpc/ao_usb_lpc.c39
-rw-r--r--src/lpc/lpc.h28
17 files changed, 615 insertions, 57 deletions
diff --git a/src/lpc/altos-loader.ld b/src/lpc/altos-loader.ld
new file mode 100644
index 00000000..4f78f552
--- /dev/null
+++ b/src/lpc/altos-loader.ld
@@ -0,0 +1,80 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+MEMORY {
+ rom : ORIGIN = 0x00000000, LENGTH = 4K
+ ram : ORIGIN = 0x10000000, LENGTH = 4k - 128 - 32
+ usb (!x) : ORIGIN = 0x20004000 + 2K - 256, LENGTH = 256
+ stack (!w) : ORIGIN = 0x10000000 + 4K - 128 - 32, LENGTH = 128
+}
+
+INCLUDE registers.ld
+
+EXTERN (lpc_interrupt_vector)
+
+SECTIONS {
+ /*
+ * Rom contents
+ */
+
+ .interrupt : {
+ __text_start__ = .;
+ *(.interrupt) /* Interrupt vectors */
+
+ } > rom
+
+ .text ORIGIN(rom) + 0x100 : {
+ ao_romconfig.o(.romconfig*)
+ ao_product.o(.romconfig*)
+
+ *(.text*) /* Executable code */
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ *(.rodata*) /* Constants */
+ __text_end__ = .;
+ } > rom
+
+ /* Boot data which must live at the start of ram so that
+ * the application and bootloader share the same addresses.
+ * This must be all uninitialized data
+ */
+ .boot ORIGIN(ram) + SIZEOF(.interrupt) (NOLOAD) : {
+ __boot_start__ = .;
+ *(.boot)
+ __boot_end__ = .;
+ } >ram
+
+ /* Data -- relocated to RAM, but written to ROM
+ */
+ .data : {
+ __data_start__ = .;
+ *(.data) /* initialized data */
+ __data_end__ = .;
+ } >ram AT>rom
+
+
+ .bss : {
+ __bss_start__ = .;
+ *(.bss)
+ *(COMMON)
+ __bss_end__ = .;
+ } >ram
+
+ PROVIDE(__stack__ = ORIGIN(ram) + LENGTH(ram));
+ PROVIDE(end = .);
+}
+
+ENTRY(start);
diff --git a/src/lpc/altos-standalone.ld b/src/lpc/altos-standalone.ld
new file mode 100644
index 00000000..032406f8
--- /dev/null
+++ b/src/lpc/altos-standalone.ld
@@ -0,0 +1,85 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+MEMORY {
+ rom (rx) : ORIGIN = 0x00000000, LENGTH = 32K
+ ram (!w) : ORIGIN = 0x10000000, LENGTH = 4K - 128 - 32
+ usb (!x) : ORIGIN = 0x20004000 + 2K - 256, LENGTH = 256
+ stack (!w) : ORIGIN = 0x10000000 + 4K - 128 - 32, LENGTH = 128
+}
+
+INCLUDE registers.ld
+
+EXTERN (lpc_interrupt_vector)
+
+SECTIONS {
+ /*
+ * Rom contents
+ */
+
+ .text ORIGIN(rom) : {
+ __text_start__ = .;
+ *(.interrupt) /* Interrupt vectors */
+
+ . = ORIGIN(rom) + 0x100;
+
+ ao_romconfig.o(.romconfig*)
+ ao_product.o(.romconfig*)
+
+ *(.text*) /* Executable code */
+ *(.rodata*) /* Constants */
+
+ } > rom
+
+ .ARM.exidx : {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ __text_end__ = .;
+ } > rom
+
+ /* Boot data which must live at the start of ram so that
+ * the application and bootloader share the same addresses.
+ * This must be all uninitialized data
+ */
+ .boot (NOLOAD) : {
+ __boot_start__ = .;
+ *(.boot)
+ . = ALIGN(4);
+ __boot_end__ = .;
+ } >ram
+
+ /* Data -- relocated to RAM, but written to ROM
+ */
+ .data ORIGIN(ram) : AT (ADDR(.ARM.exidx) + SIZEOF (.ARM.exidx)) {
+ __data_start__ = .;
+ *(.data) /* initialized data */
+ __data_end__ = .;
+ __bss_start__ = .;
+ } >ram
+
+ .bss : {
+ *(.bss)
+ *(COMMON)
+ __bss_end__ = .;
+ } >ram
+ PROVIDE(end = .);
+
+ PROVIDE(__stack__ = ORIGIN(stack) + LENGTH(stack));
+}
+
+ENTRY(start);
+
+
diff --git a/src/lpc/altos.ld b/src/lpc/altos.ld
index 4d6f35a8..00d4f18a 100644
--- a/src/lpc/altos.ld
+++ b/src/lpc/altos.ld
@@ -16,7 +16,7 @@
*/
MEMORY {
- rom (rx) : ORIGIN = 0x00000000, LENGTH = 32K
+ rom (rx) : ORIGIN = 0x00001000, LENGTH = 28K
ram (!w) : ORIGIN = 0x10000000, LENGTH = 4K - 128
usb (!x) : ORIGIN = 0x20004000 + 2K - 256, LENGTH = 256
stack (!w) : ORIGIN = 0x10000000 + 4K - 128, LENGTH = 128
@@ -31,11 +31,15 @@ SECTIONS {
* Rom contents
*/
- .text ORIGIN(rom) : {
- __text_start__ = .;
+ .interrupt ORIGIN(ram) : AT (ORIGIN(rom)) {
+ __interrupt_start__ = .;
+ __interrupt_rom__ = ORIGIN(rom);
*(.interrupt) /* Interrupt vectors */
+ __interrupt_end__ = .;
+ } > ram
- . = ORIGIN(rom) + 0x100;
+ .text ORIGIN(rom) + 0x100 : {
+ __text_start__ = .;
ao_romconfig.o(.romconfig*)
ao_product.o(.romconfig*)
@@ -50,9 +54,20 @@ SECTIONS {
__text_end__ = .;
} > rom
+ /* Boot data which must live at the start of ram so that
+ * the application and bootloader share the same addresses.
+ * This must be all uninitialized data
+ */
+ .boot : {
+ __boot_start__ = .;
+ *(.boot)
+ . = ALIGN(4);
+ __boot_end__ = .;
+ } >ram
+
/* Data -- relocated to RAM, but written to ROM
*/
- .data ORIGIN(ram) : AT (ADDR(.ARM.exidx) + SIZEOF (.ARM.exidx)) {
+ .data : AT (ADDR(.ARM.exidx) + SIZEOF (.ARM.exidx)) {
__data_start__ = .;
*(.data) /* initialized data */
__data_end__ = .;
@@ -60,6 +75,7 @@ SECTIONS {
} >ram
.bss : {
+ __bss_start__ = .;
*(.bss)
*(COMMON)
__bss_end__ = .;
diff --git a/src/lpc/ao_adc_lpc.c b/src/lpc/ao_adc_lpc.c
index 9ecc7c13..874d2d29 100644
--- a/src/lpc/ao_adc_lpc.c
+++ b/src/lpc/ao_adc_lpc.c
@@ -82,42 +82,56 @@
# endif
#endif
-static uint8_t ao_adc_ready;
+#define AO_ADC_MASK ((AO_ADC_0 << 0) | \
+ (AO_ADC_1 << 1) | \
+ (AO_ADC_2 << 2) | \
+ (AO_ADC_3 << 3) | \
+ (AO_ADC_4 << 4) | \
+ (AO_ADC_5 << 5) | \
+ (AO_ADC_6 << 6) | \
+ (AO_ADC_7 << 7))
+
+#define AO_ADC_CLKDIV (AO_LPC_SYSCLK / 4500000)
+
+static uint8_t ao_adc_ready;
+
+#define sample(id) (*out++ = lpc_adc.dr[id] >> 1)
void lpc_adc_isr(void)
{
uint32_t stat = lpc_adc.stat;
- uint16_t *out = (uint16_t *) &ao_data_ring[ao_data_head].adc;
- vuint32_t *in = &lpc_adc.dr[0];
+ uint16_t *out;
+ /* Turn off burst mode */
lpc_adc.cr = 0;
lpc_adc.stat = 0;
/* Store converted values in packet */
+ out = (uint16_t *) &ao_data_ring[ao_data_head].adc;
#if AO_ADC_0
- *out++ = lpc_adc.dr[0] >> 1;
+ sample(0);
#endif
#if AO_ADC_1
- *out++ = lpc_adc.dr[1] >> 1;
+ sample(1);
#endif
#if AO_ADC_2
- *out++ = lpc_adc.dr[2] >> 1;
+ sample(2);
#endif
#if AO_ADC_3
- *out++ = lpc_adc.dr[3] >> 1;
+ sample(3);
#endif
#if AO_ADC_4
- *out++ = lpc_adc.dr[4] >> 1;
+ sample(4);
#endif
#if AO_ADC_5
- *out++ = lpc_adc.dr[5] >> 1;
+ sample(5);
#endif
#if AO_ADC_6
- *out++ = lpc_adc.dr[6] >> 1;
+ sample(6);
#endif
#if AO_ADC_7
- *out++ = lpc_adc.dr[7] >> 1;
+ sample(7);
#endif
AO_DATA_PRESENT(AO_DATA_ADC);
@@ -141,16 +155,6 @@ void lpc_adc_isr(void)
ao_adc_ready = 1;
}
-#define AO_ADC_MASK ((AO_ADC_0 << 0) | \
- (AO_ADC_1 << 1) | \
- (AO_ADC_2 << 2) | \
- (AO_ADC_3 << 3) | \
- (AO_ADC_4 << 4) | \
- (AO_ADC_5 << 5) | \
- (AO_ADC_6 << 6) | \
- (AO_ADC_7 << 7))
-
-#define AO_ADC_CLKDIV (AO_LPC_CLKOUT / 4500000)
/*
* Start the ADC sequence using the DMA engine
@@ -204,29 +208,35 @@ ao_adc_init(void)
lpc_nvic_set_enable(LPC_ISR_ADC_POS);
lpc_nvic_set_priority(LPC_ISR_ADC_POS, AO_LPC_NVIC_CLOCK_PRIORITY);
#if AO_ADC_0
- ao_enable_analog(0, 11);
+ ao_enable_analog(0, 11, 0);
#endif
#if AO_ADC_1
- ao_enable_analog(0, 12);
+ ao_enable_analog(0, 12, 1);
#endif
#if AO_ADC_2
- ao_enable_analog(0, 13);
+ ao_enable_analog(0, 13, 2);
#endif
#if AO_ADC_3
- ao_enable_analog(0, 14);
+ ao_enable_analog(0, 14, 3);
#endif
#if AO_ADC_4
- ao_enable_analog(0, 14);
+ ao_enable_analog(0, 15, 4);
#endif
#if AO_ADC_5
- ao_enable_analog(0, 14);
+ ao_enable_analog(0, 16, 5);
#endif
#if AO_ADC_6
- ao_enable_analog(0, 14);
+ ao_enable_analog(0, 22, 6);
#endif
#if AO_ADC_7
- ao_enable_analog(0, 14);
+ ao_enable_analog(0, 23, 7);
#endif
+
+ lpc_adc.cr = ((AO_ADC_MASK << LPC_ADC_CR_SEL) |
+ (AO_ADC_CLKDIV << LPC_ADC_CR_CLKDIV) |
+ (0 << LPC_ADC_CR_BURST) |
+ (LPC_ADC_CR_CLKS_11 << LPC_ADC_CR_CLKS));
+
ao_cmd_register(&ao_adc_cmds[0]);
ao_adc_ready = 1;
diff --git a/src/lpc/ao_arch.h b/src/lpc/ao_arch.h
index f605e3d2..a8d3cfc4 100644
--- a/src/lpc/ao_arch.h
+++ b/src/lpc/ao_arch.h
@@ -137,4 +137,8 @@ ao_serial_init(void);
#define AO_SPI_SPEED_FAST AO_SPI_SPEED_12MHz
+#define AO_BOOT_APPLICATION_BASE ((uint32_t *) 0x00001000)
+#define AO_BOOT_LOADER_BASE ((uint32_t *) 0x00000000)
+#define HAS_BOOT_LOADER 1
+
#endif /* _AO_ARCH_H_ */
diff --git a/src/lpc/ao_arch_funcs.h b/src/lpc/ao_arch_funcs.h
index 204d1227..9a3219a2 100644
--- a/src/lpc/ao_arch_funcs.h
+++ b/src/lpc/ao_arch_funcs.h
@@ -22,12 +22,13 @@
#define ao_spi_put_bit(reg,bit,pin,bus) ao_spi_put_mask(reg,(1<<bit),bus)
#define ao_enable_port(port) (lpc_scb.sysahbclkctrl |= (1 << LPC_SCB_SYSAHBCLKCTRL_GPIO))
+#define ao_disable_port(port) (lpc_scb.sysahbclkctrl &= ~(1 << LPC_SCB_SYSAHBCLKCTRL_GPIO))
#define lpc_all_bit(port,bit) (((port) << 5) | (bit))
#define ao_gpio_set(port, bit, pin, v) (lpc_gpio.byte[lpc_all_bit(port,bit)] = (v))
-#define ao_gpio_get(port, bit, pin) (lpc_gpio_byte[lpc_all_bit(port,bit)])
+#define ao_gpio_get(port, bit, pin) (lpc_gpio.byte[lpc_all_bit(port,bit)])
#define ao_enable_output(port,bit,pin,v) do { \
ao_enable_port(port); \
@@ -35,11 +36,9 @@
lpc_gpio.dir[port] |= (1 << bit); \
} while (0)
-#define ao_enable_input(port,bit,mode) do { \
+#define ao_gpio_set_mode(port,bit,mode) do { \
vuint32_t *_ioconf = &lpc_ioconf.pio0_0 + ((port)*24+(bit)); \
vuint32_t _mode; \
- ao_enable_port(port); \
- lpc_gpio.dir[port] &= ~(1 << bit); \
if (mode == AO_EXTI_MODE_PULL_UP) \
_mode = LPC_IOCONF_MODE_PULL_UP << LPC_IOCONF_MODE; \
else if (mode == AO_EXTI_MODE_PULL_DOWN) \
@@ -51,12 +50,26 @@
(1 << LPC_IOCONF_ADMODE)); \
} while (0)
-#define ao_enable_analog(port,bit) do { \
- vuint32_t *_ioconf = &lpc_ioconf.pio0_0 + ((port)*24+(bit)); \
+#define ao_enable_input(port,bit,mode) do { \
ao_enable_port(port); \
lpc_gpio.dir[port] &= ~(1 << bit); \
- *_ioconf = *_ioconf & ~((1 << LPC_IOCONF_ADMODE) | \
- (LPC_IOCONF_MODE_MASK << LPC_IOCONF_MODE)); \
+ ao_gpio_set_mode(port,bit,mode); \
+ } while (0)
+
+#define lpc_token_paster_2(x,y) x ## y
+#define lpc_token_evaluator_2(x,y) lpc_token_paster_2(x,y)
+#define lpc_token_paster_3(x,y,z) x ## y ## z
+#define lpc_token_evaluator_3(x,y,z) lpc_token_paster_3(x,y,z)
+#define lpc_token_paster_4(w,x,y,z) w ## x ## y ## z
+#define lpc_token_evaluator_4(w,x,y,z) lpc_token_paster_4(w,x,y,z)
+#define analog_reg(port,bit) lpc_token_evaluator_4(pio,port,_,bit)
+#define analog_func(id) lpc_token_evaluator_2(LPC_IOCONF_FUNC_AD,id)
+
+#define ao_enable_analog(port,bit,id) do { \
+ ao_enable_port(port); \
+ lpc_gpio.dir[port] &= ~(1 << bit); \
+ lpc_ioconf.analog_reg(port,bit) = ((analog_func(id) << LPC_IOCONF_FUNC) | \
+ (0 << LPC_IOCONF_ADMODE)); \
} while (0)
#define ARM_PUSH32(stack, val) (*(--(stack)) = (val))
@@ -79,6 +92,7 @@ ao_arch_memory_barrier() {
asm volatile("" ::: "memory");
}
+#if HAS_TASK
static inline void
ao_arch_init_stack(struct ao_task *task, void *start)
{
@@ -145,6 +159,8 @@ static inline void ao_arch_restore_stack(void) {
#define ao_arch_isr_stack()
+#endif /* HAS_TASK */
+
#define ao_arch_wait_interrupt() do { \
asm(".global ao_idle_loc\n\twfi\nao_idle_loc:"); \
ao_arch_release_interrupts(); \
diff --git a/src/lpc/ao_boot.h b/src/lpc/ao_boot.h
new file mode 100644
index 00000000..e0ed4de7
--- /dev/null
+++ b/src/lpc/ao_boot.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_BOOT_H_
+#define _AO_BOOT_H_
+
+void
+ao_boot_chain(uint32_t *base);
+
+void
+ao_boot_check_pin(void);
+
+/* Return true to switch to application (if present) */
+int
+ao_boot_check_chain(void);
+
+void
+ao_boot_reboot(uint32_t *base);
+
+static inline void
+ao_boot_loader(void) {
+ ao_boot_reboot(AO_BOOT_LOADER_BASE);
+}
+
+#endif /* _AO_BOOT_H_ */
diff --git a/src/lpc/ao_boot_chain.c b/src/lpc/ao_boot_chain.c
new file mode 100644
index 00000000..a08d1f2c
--- /dev/null
+++ b/src/lpc/ao_boot_chain.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+#include <ao_boot.h>
+
+void
+ao_boot_chain(uint32_t *base)
+{
+ uint32_t sp;
+ uint32_t pc;
+
+ sp = base[0];
+ pc = base[1];
+ if (0x00000100 <= pc && pc <= 0x00008000 && (pc & 1) == 1) {
+ asm ("mov sp, %0" : : "r" (sp));
+ asm ("mov lr, %0" : : "r" (pc));
+ asm ("bx lr");
+ }
+}
+
+#define AO_BOOT_SIGNAL 0x5a5aa5a5
+#define AO_BOOT_CHECK 0xc3c33c3c
+
+struct ao_boot {
+ uint32_t *base;
+ uint32_t signal;
+ uint32_t check;
+};
+
+static struct ao_boot __attribute__ ((section(".boot"))) ao_boot;
+
+int
+ao_boot_check_chain(void)
+{
+ if (ao_boot.signal == AO_BOOT_SIGNAL && ao_boot.check == AO_BOOT_CHECK) {
+ ao_boot.signal = 0;
+ ao_boot.check = 0;
+ if (ao_boot.base == 0)
+ return 0;
+ ao_boot_chain(ao_boot.base);
+ }
+ return 1;
+}
+
+void
+ao_boot_reboot(uint32_t *base)
+{
+ ao_boot.base = base;
+ ao_boot.signal = AO_BOOT_SIGNAL;
+ ao_boot.check = AO_BOOT_CHECK;
+ ao_arch_reboot();
+}
diff --git a/src/lpc/ao_boot_pin.c b/src/lpc/ao_boot_pin.c
new file mode 100644
index 00000000..51ecc0a9
--- /dev/null
+++ b/src/lpc/ao_boot_pin.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+#include <ao_boot.h>
+#include <ao_exti.h>
+
+void
+ao_boot_check_pin(void)
+{
+ uint16_t v;
+
+ /* Enable power interface clock */
+// stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_PWREN);
+
+ /* Enable the input pin */
+ ao_enable_input(AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN,
+ AO_BOOT_APPLICATION_MODE);
+
+ for (v = 0; v < 100; v++)
+ ao_arch_nop();
+
+ /* Read the value */
+ v = ao_gpio_get(AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN, AO_BOOT_APPLICATION);
+
+ /* Reset the chip to turn off the port and the power interface clock */
+ ao_gpio_set_mode(AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN, 0);
+ ao_disable_port(AO_BOOT_APPLICATION_GPIO);
+// stm_rcc.apb1enr &= ~(1 << STM_RCC_APB1ENR_PWREN);
+ if (v == AO_BOOT_APPLICATION_VALUE)
+ ao_boot_chain(AO_BOOT_APPLICATION_BASE);
+}
diff --git a/src/lpc/ao_flash.h b/src/lpc/ao_flash.h
new file mode 100644
index 00000000..aaf66b39
--- /dev/null
+++ b/src/lpc/ao_flash.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_FLASH_H_
+#define _AO_FLASH_H_
+
+uint32_t
+ao_flash_erase_page(uint8_t *page);
+
+uint32_t
+ao_flash_page(uint8_t *page, uint8_t *src);
+
+uint32_t
+ao_lpc_read_part_id(void);
+
+#endif /* _AO_FLASH_H_ */
diff --git a/src/lpc/ao_flash_loader_lpc.c b/src/lpc/ao_flash_loader_lpc.c
new file mode 100644
index 00000000..2ab548cf
--- /dev/null
+++ b/src/lpc/ao_flash_loader_lpc.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+#include <ao_exti.h>
+#include <ao_boot.h>
+#include <ao_flash_task.h>
+
+int
+main(void)
+{
+ ao_clock_init();
+
+ ao_usb_init();
+
+ ao_flash_task();
+ return 0;
+}
diff --git a/src/lpc/ao_flash_lpc_pins.h b/src/lpc/ao_flash_lpc_pins.h
new file mode 100644
index 00000000..e2243d5c
--- /dev/null
+++ b/src/lpc/ao_flash_lpc_pins.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_FLASH_LPC_PINS_H_
+#define _AO_FLASH_LPC_PINS_H_
+
+#include <ao_flash_pins.h>
+
+/* Crystal on the board */
+#define AO_LPC_CLKIN 12000000
+
+/* Main clock frequency. 48MHz for USB so we don't use the USB PLL */
+#define AO_LPC_CLKOUT 48000000
+
+/* System clock frequency */
+#define AO_LPC_SYSCLK 24000000
+
+#endif /* _AO_FLASH_STM_PINS_H_ */
diff --git a/src/lpc/ao_interrupt.c b/src/lpc/ao_interrupt.c
index b5e67007..c4dc7867 100644
--- a/src/lpc/ao_interrupt.c
+++ b/src/lpc/ao_interrupt.c
@@ -17,12 +17,25 @@
#include <ao.h>
#include <string.h>
+#include <ao_boot.h>
+
+#ifndef IS_FLASH_LOADER
+#error Should define IS_FLASH_LOADER
+#define IS_FLASH_LOADER 0
+#endif
+
+#if !IS_FLASH_LOADER
+#define RELOCATE_INTERRUPT 1
+#endif
extern void main(void);
extern char __stack__;
extern char __text_start__, __text_end__;
extern char __data_start__, __data_end__;
extern char __bss_start__, __bss_end__;
+#if RELOCATE_INTERRUPT
+extern char __interrupt_rom__, __interrupt_start__, __interrupt_end__;
+#endif
/* Interrupt functions */
@@ -35,10 +48,18 @@ void lpc_ignore_isr(void)
{
}
-int x;
-
void start(void) {
- x = 0;
+#ifdef AO_BOOT_CHAIN
+ if (ao_boot_check_chain()) {
+#ifdef AO_BOOT_PIN
+ ao_boot_check_pin();
+#endif
+ }
+#endif
+#if RELOCATE_INTERRUPT
+ memcpy(&__interrupt_start__, &__interrupt_rom__, &__interrupt_end__ - &__interrupt_start__);
+ lpc_scb.sysmemremap = LPC_SCB_SYSMEMREMAP_MAP_RAM << LPC_SCB_SYSMEMREMAP_MAP;
+#endif
memcpy(&__data_start__, &__text_end__, &__data_end__ - &__data_start__);
memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__);
main();
diff --git a/src/lpc/ao_spi_lpc.c b/src/lpc/ao_spi_lpc.c
index c3587698..a889137c 100644
--- a/src/lpc/ao_spi_lpc.c
+++ b/src/lpc/ao_spi_lpc.c
@@ -42,7 +42,7 @@ static uint8_t spi_dev_null;
/* recv a byte */ \
get lpc_ssp->dr; \
} \
- } while (0);
+ } while (0)
void
ao_spi_send(void *block, uint16_t len, uint8_t id)
diff --git a/src/lpc/ao_timer_lpc.c b/src/lpc/ao_timer_lpc.c
index 51835baa..44fb410e 100644
--- a/src/lpc/ao_timer_lpc.c
+++ b/src/lpc/ao_timer_lpc.c
@@ -100,18 +100,33 @@ ao_clock_init(void)
(1 << LPC_SCB_SYSAHBCLKCTRL_GPIO) |
(1 << LPC_SCB_SYSAHBCLKCTRL_IOCON));
+ /* Enable the brown-out detection at the highest voltage to
+ * make sure the flash part remains happy
+ */
+
+ lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_BOD_PD);
+ lpc_scb.bodctrl = ((LPC_SCB_BOD_BODRSTLEV_2_63 << LPC_SCB_BOD_BODRSTLEV) |
+ (LPC_SCB_BOD_BODINTVAL_RESERVED << LPC_SCB_BOD_BODINTVAL) |
+ (1 << LPC_SCB_BOD_BODRSTENA));
+
/* Turn the IRC clock back on */
lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_IRC_PD);
ao_clock_delay();
/* Switch to the IRC clock */
lpc_scb.mainclksel = LPC_SCB_MAINCLKSEL_SEL_IRC << LPC_SCB_MAINCLKSEL_SEL;
- lpc_scb.mainclkuen = (1 << LPC_SCB_MAINCLKUEN_ENA);
lpc_scb.mainclkuen = (0 << LPC_SCB_MAINCLKUEN_ENA);
lpc_scb.mainclkuen = (1 << LPC_SCB_MAINCLKUEN_ENA);
while (!(lpc_scb.mainclkuen & (1 << LPC_SCB_MAINCLKUEN_ENA)))
;
+ /* Switch USB to the main clock */
+ lpc_scb.usbclksel = (LPC_SCB_USBCLKSEL_SEL_MAIN_CLOCK << LPC_SCB_USBCLKSEL_SEL);
+ lpc_scb.usbclkuen = (0 << LPC_SCB_USBCLKUEN_ENA);
+ lpc_scb.usbclkuen = (1 << LPC_SCB_USBCLKUEN_ENA);
+ while (!(lpc_scb.usbclkuen & (1 << LPC_SCB_USBCLKUEN_ENA)))
+ ;
+
/* Find a PLL post divider ratio that gets the FCCO in range */
for (p = 0; p < 4; p++)
if (AO_LPC_CLKOUT << (1 + p) >= AO_LPC_FCCO_MIN)
@@ -177,4 +192,22 @@ ao_clock_init(void)
lpc_scb.ssp1clkdiv = 0;
lpc_scb.usbclkdiv = 0;
lpc_scb.clkoutdiv = 0;
+
+ /* Switch USB PLL source to system osc so we can power down the IRC */
+ lpc_scb.usbpllclksel = (LPC_SCB_USBPLLCLKSEL_SEL_SYSOSC << LPC_SCB_USBPLLCLKSEL_SEL);
+ lpc_scb.usbpllclkuen = (0 << LPC_SCB_USBPLLCLKUEN_ENA);
+ lpc_scb.usbpllclkuen = (1 << LPC_SCB_USBPLLCLKUEN_ENA);
+ while (!(lpc_scb.usbpllclkuen & (1 << LPC_SCB_USBPLLCLKUEN_ENA)))
+ ;
+
+ /* Power down everything we don't need */
+ lpc_scb.pdruncfg = ((1 << LPC_SCB_PDRUNCFG_IRCOUT_PD) |
+ (1 << LPC_SCB_PDRUNCFG_IRC_PD) |
+ (0 << LPC_SCB_PDRUNCFG_BOD_PD) |
+ (1 << LPC_SCB_PDRUNCFG_ADC_PD) |
+ (1 << LPC_SCB_PDRUNCFG_WDTOSC_PD) |
+ (1 << LPC_SCB_PDRUNCFG_USBPLL_PD) |
+ (1 << LPC_SCB_PDRUNCFG_USBPAD_PD) |
+ (1 << 11) |
+ (7 << 13));
}
diff --git a/src/lpc/ao_usb_lpc.c b/src/lpc/ao_usb_lpc.c
index aac0df04..144d1075 100644
--- a/src/lpc/ao_usb_lpc.c
+++ b/src/lpc/ao_usb_lpc.c
@@ -19,6 +19,16 @@
#include "ao_usb.h"
#include "ao_product.h"
+#ifndef USE_USB_STDIO
+#define USE_USB_STDIO 1
+#endif
+
+#if USE_USB_STDIO
+#define AO_USB_OUT_SLEEP_ADDR (&ao_stdin_ready)
+#else
+#define AO_USB_OUT_SLEEP_ADDR (&ao_usb_out_avail)
+#endif
+
#define USB_DEBUG 0
#define USB_DEBUG_DATA 0
#define USB_ECHO 0
@@ -35,8 +45,6 @@
#define debug_data(format, args...)
#endif
-struct ao_task ao_usb_task;
-
struct ao_usb_setup {
uint8_t dir_type_recip;
uint8_t request;
@@ -654,7 +662,7 @@ lpc_usb_irq_isr(void)
_rx_dbg1("RX ISR", *ao_usb_epn_out(AO_USB_OUT_EP));
ao_usb_out_avail = 1;
_rx_dbg0("out avail set");
- ao_wakeup(&ao_stdin_ready);
+ ao_wakeup(AO_USB_OUT_SLEEP_ADDR)
_rx_dbg0("stdin awoken");
}
@@ -813,7 +821,7 @@ ao_usb_getchar(void)
ao_arch_block_interrupts();
while ((c = _ao_usb_pollchar()) == AO_READ_AGAIN)
- ao_sleep(&ao_stdin_ready);
+ ao_sleep(AO_USB_OUT_SLEEP_ADDR);
ao_arch_release_interrupts();
return c;
}
@@ -823,6 +831,9 @@ ao_usb_disable(void)
{
ao_arch_block_interrupts();
+#if HAS_USB_PULLUP
+ ao_gpio_set(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 0);
+#endif
/* Disable interrupts */
lpc_usb.inten = 0;
@@ -834,8 +845,9 @@ ao_usb_disable(void)
/* Turn off USB clock */
lpc_scb.usbclkdiv = 0;
- /* Disable USB PHY */
- lpc_scb.pdruncfg |= (1 << LPC_SCB_PDRUNCFG_USBPAD_PD);
+ /* Disable USB PHY and PLL */
+ lpc_scb.pdruncfg |= ((1 << LPC_SCB_PDRUNCFG_USBPAD_PD) |
+ (1 << LPC_SCB_PDRUNCFG_USBPLL_PD));
/* Disable USB registers and RAM */
lpc_scb.sysahbclkctrl &= ~((1 << LPC_SCB_SYSAHBCLKCTRL_USB) |
@@ -877,7 +889,6 @@ ao_usb_enable(void)
lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_USBPLL_PD);
lpc_scb.usbpllclksel = (LPC_SCB_SYSPLLCLKSEL_SEL_SYSOSC << LPC_SCB_SYSPLLCLKSEL_SEL);
- lpc_scb.usbpllclkuen = (1 << LPC_SCB_USBPLLCLKUEN_ENA);
lpc_scb.usbpllclkuen = (0 << LPC_SCB_USBPLLCLKUEN_ENA);
lpc_scb.usbpllclkuen = (1 << LPC_SCB_USBPLLCLKUEN_ENA);
while (!(lpc_scb.usbpllclkuen & (1 << LPC_SCB_USBPLLCLKUEN_ENA)))
@@ -887,6 +898,10 @@ ao_usb_enable(void)
;
lpc_scb.usbclksel = 0;
+ lpc_scb.usbclkuen = (0 << LPC_SCB_USBCLKUEN_ENA);
+ lpc_scb.usbclkuen = (1 << LPC_SCB_USBCLKUEN_ENA);
+ while (!(lpc_scb.usbclkuen & (1 << LPC_SCB_USBCLKUEN_ENA)))
+ ;
/* Turn on USB clock, use 48MHz clock unchanged */
lpc_scb.usbclkdiv = 1;
@@ -921,6 +936,10 @@ ao_usb_enable(void)
for (t = 0; t < 1000; t++)
ao_arch_nop();
+#if HAS_USB_PULLUP
+ ao_gpio_set(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 1);
+#endif
+
ao_usb_set_ep0();
}
@@ -957,6 +976,10 @@ __code struct ao_cmds ao_usb_cmds[] = {
void
ao_usb_init(void)
{
+#if HAS_USB_PULLUP
+ ao_enable_output(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 0);
+#endif
+
ao_usb_enable();
debug ("ao_usb_init\n");
@@ -966,7 +989,7 @@ ao_usb_init(void)
#if USB_DEBUG
ao_cmd_register(&ao_usb_cmds[0]);
#endif
-#if !USB_ECHO
+#if USE_USB_STDIO
ao_add_stdio(_ao_usb_pollchar, ao_usb_putchar, ao_usb_flush);
#endif
}
diff --git a/src/lpc/lpc.h b/src/lpc/lpc.h
index 49034c1c..3300c86f 100644
--- a/src/lpc/lpc.h
+++ b/src/lpc/lpc.h
@@ -486,6 +486,11 @@ struct lpc_scb {
extern struct lpc_scb lpc_scb;
+#define LPC_SCB_SYSMEMREMAP_MAP 0
+# define LPC_SCB_SYSMEMREMAP_MAP_BOOT_LOADER 0
+# define LPC_SCB_SYSMEMREMAP_MAP_RAM 1
+# define LPC_SCB_SYSMEMREMAP_MAP_FLASH 2
+
#define LPC_SCB_PRESETCTRL_SSP0_RST_N 0
#define LPC_SCB_PRESETCTRL_I2C_RST_N 1
#define LPC_SCB_PRESETCTRL_SSP1_RST_N 2
@@ -609,6 +614,18 @@ extern struct lpc_scb lpc_scb;
#define LPC_SCB_CLKOUTUEN_ENA 0
+#define LPC_SCB_BOD_BODRSTLEV 0
+# define LPC_SCB_BOD_BODRSTLEV_1_46 0
+# define LPC_SCB_BOD_BODRSTLEV_2_06 1
+# define LPC_SCB_BOD_BODRSTLEV_2_35 2
+# define LPC_SCB_BOD_BODRSTLEV_2_63 3
+#define LPC_SCB_BOD_BODINTVAL 2
+# define LPC_SCB_BOD_BODINTVAL_RESERVED 0
+# define LPC_SCB_BOD_BODINTVAL_2_22 1
+# define LPC_SCB_BOD_BODINTVAL_2_52 2
+# define LPC_SCB_BOD_BODINTVAL_2_80 3
+#define LPC_SCB_BOD_BODRSTENA 4
+
#define LPC_SCB_PDRUNCFG_IRCOUT_PD 0
#define LPC_SCB_PDRUNCFG_IRC_PD 1
#define LPC_SCB_PDRUNCFG_FLASH_PD 2
@@ -1002,12 +1019,12 @@ extern struct lpc_nvic lpc_nvic;
static inline void
lpc_nvic_set_enable(int irq) {
- lpc_nvic.iser |= (1 << irq);
+ lpc_nvic.iser = (1 << irq);
}
static inline void
lpc_nvic_clear_enable(int irq) {
- lpc_nvic.icer |= (1 << irq);
+ lpc_nvic.icer = (1 << irq);
}
static inline int
@@ -1169,6 +1186,13 @@ extern struct lpc_adc lpc_adc;
#define LPC_ADC_CR_CLKS_6 5
#define LPC_ADC_CR_CLKS_5 6
#define LPC_ADC_CR_CLKS_4 7
+#define LPC_ADC_CR_START 24
+#define LPC_ADC_CR_START_NONE 0
+#define LPC_ADC_CR_START_NOW 1
+
+#define LPC_ADC_GDR_CHN 24
+#define LPC_ADC_GDR_OVERRUN 30
+#define LPC_ADC_GDR_DONE 31
#define LPC_ADC_INTEN_ADINTEN 0
#define LPC_ADC_INTEN_ADGINTEN 8
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-30 13:12:23 +0000