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STM32 I2C fix, documentation update, fixes for FreeBSD/ASH build

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3917 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-08-27 14:58:42 +00:00
parent 12d496667c
commit 6adfba6b83
2 changed files with 46 additions and 4 deletions
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42
arch/arm/src/stm32/stm32_i2c.c
View File

@ -129,14 +129,26 @@ struct stm32_i2c_inst_s {
#if CONFIG_STM32_I2C1
struct stm32_i2c_priv_s stm32_i2c1_priv = {
.base = STM32_I2C1_BASE,
.refs = 0
.refs = 0,
.msgc = 0,
.msgv = NULL,
.ptr = NULL,
.dcnt = 0,
.flags = 0,
.status = 0
};
#endif
#if CONFIG_STM32_I2C2
struct stm32_i2c_priv_s stm32_i2c2_priv = {
.base = STM32_I2C2_BASE,
.refs = 0
.refs = 0,
.msgc = 0,
.msgv = NULL,
.ptr = NULL,
.dcnt = 0,
.flags = 0,
.status = 0
};
#endif
@ -443,13 +455,24 @@ static int stm32_i2c_init(FAR struct stm32_i2c_priv_s *priv)
#if CONFIG_STM32_I2C1
case STM32_I2C1_BASE:
modifyreg32(STM32_RCC_APB1ENR, 0, RCC_APB1ENR_I2C1EN);
/* enable power and reset the peripheral */
modifyreg32(STM32_RCC_APB1ENR, 0, RCC_APB1ENR_I2C1EN);
modifyreg32(STM32_RCC_APB1RSTR, 0, RCC_APB1RSTR_I2C1RST);
modifyreg32(STM32_RCC_APB1RSTR, RCC_APB1RSTR_I2C1RST, 0);
/* configure pins */
if (stm32_configgpio(GPIO_I2C1_SCL)==ERROR) return ERROR;
if (stm32_configgpio(GPIO_I2C1_SDA)==ERROR) {
stm32_unconfiggpio(GPIO_I2C1_SCL);
return ERROR;
}
/* attach ISRs */
irq_attach(STM32_IRQ_I2C1EV, stm32_i2c1_isr);
irq_attach(STM32_IRQ_I2C1ER, stm32_i2c1_isr);
up_enable_irq(STM32_IRQ_I2C1EV);
@ -459,13 +482,24 @@ static int stm32_i2c_init(FAR struct stm32_i2c_priv_s *priv)
#if CONFIG_STM32_I2C2
case STM32_I2C2_BASE:
/* enable power and reset the peripheral */
modifyreg32(STM32_RCC_APB1ENR, 0, RCC_APB1ENR_I2C2EN);
modifyreg32(STM32_RCC_APB1RSTR, 0, RCC_APB1RSTR_I2C2RST);
modifyreg32(STM32_RCC_APB1RSTR, RCC_APB1RSTR_I2C2RST, 0);
/* configure pins */
if (stm32_configgpio(GPIO_I2C2_SCL)==ERROR) return ERROR;
if (stm32_configgpio(GPIO_I2C2_SDA)==ERROR) {
stm32_unconfiggpio(GPIO_I2C2_SCL);
return ERROR;
}
/* attach ISRs */
irq_attach(STM32_IRQ_I2C2EV, stm32_i2c2_isr);
irq_attach(STM32_IRQ_I2C2ER, stm32_i2c2_isr);
up_enable_irq(STM32_IRQ_I2C2EV);
@ -748,7 +782,7 @@ FAR struct i2c_dev_s * up_i2cinitialize(int port)
return NULL;
#endif
/* Get structure and enable power */
/* Get I2C private structure */
switch(port) {
#if CONFIG_STM32_I2C1

8
arch/x86/src/Makefile
View File

@ -81,6 +81,14 @@ BOARDDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board
LIBGCC = "${shell $(CC) -print-libgcc-file-name}"
ifeq ($(HOSTOS),FreeBSD)
HOST_ARCH = ${shell uname -m 2>/dev/null || echo "Other"}
ifeq ($(HOST_ARCH),amd64)
LDFLAGS += -melf_i386
LIBGCC = "/usr/lib32/libgcc.a"
endif
endif
VPATH = chip:common:$(ARCH_SUBDIR)
all: $(HEAD_OBJ) libarch$(LIBEXT)