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-rw-r--r--build_rules10
-rw-r--r--gpio/gpio.h29
-rw-r--r--interrupt/fault.cpp2
-rw-r--r--ld_scripts/stm32_f0_8.ld6
-rw-r--r--rcc/rcc.h76
5 files changed, 108 insertions, 15 deletions
diff --git a/build_rules b/build_rules
index 6137608..4f1823b 100644
--- a/build_rules
+++ b/build_rules
@@ -44,7 +44,15 @@ def select_stm32(env, variant):
pin_count = variant[9]
flash = variant[10]
- if family == 'f103':
+ if family == 'f051':
+ select_arm(env, 'cortex-m0')
+ env.Append(CPPDEFINES = ['STM32F0'])
+
+ env['LINK_SCRIPT'] = {
+ '8': 'stm32_f0_8.ld',
+ }[flash]
+
+ elif family == 'f103':
select_arm(env, 'cortex-m3')
env.Append(CPPDEFINES = ['STM32F1'])
diff --git a/gpio/gpio.h b/gpio/gpio.h
index a5fdc4e..b4f9136 100644
--- a/gpio/gpio.h
+++ b/gpio/gpio.h
@@ -12,7 +12,7 @@ struct GPIO_reg_t {
volatile uint32_t BSRR;
volatile uint32_t BRR;
volatile uint32_t LCKR;
- #elif defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #else
volatile uint32_t MODER;
volatile uint32_t OTYPER;
volatile uint32_t OSPEEDR;
@@ -44,7 +44,7 @@ class GPIO_t {
Output = 0x3,
AF = 0xb,
Analog = 0x0,
- #elif defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #else
Input,
Output,
AF,
@@ -77,7 +77,7 @@ class GPIO_t {
} else {
g.reg.CRH = (g.reg.CRH & ~(0xf << (n * 4 - 32))) | m << (n * 4 - 32);
}
- #elif defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #else
g.reg.MODER = (g.reg.MODER & ~(3 << (n * 2))) | m << (n * 2);
#endif
}
@@ -85,7 +85,7 @@ class GPIO_t {
void set_type(Type t) {
#if defined(STM32F1)
// TODO: Unified configure() method?
- #elif defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #else
if(t) {
g.reg.OTYPER |= 1 << n;
} else {
@@ -97,13 +97,15 @@ class GPIO_t {
void set_pull(Pull p) {
#if defined(STM32F1)
// TODO: Unified configure() method?
- #elif defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #else
g.reg.PUPDR = (g.reg.PUPDR & ~(3 << (n * 2))) | p << (n * 2);
#endif
}
void set_af(int af) {
- #if defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #if defined(STM32F1)
+ // TODO: Unified configure() method?
+ #else
if(n < 8) {
g.reg.AFRL = (g.reg.AFRL & ~(0xf << (n * 4))) | af << (n * 4);
} else {
@@ -113,7 +115,9 @@ class GPIO_t {
}
void set_speed(Speed s) {
- #if defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #if defined(STM32F1)
+ // TODO: Unified configure() method?
+ #else
g.reg.OSPEEDR = (g.reg.OSPEEDR & ~(3 << (n * 2))) | s << (n * 2);
#endif
}
@@ -160,7 +164,7 @@ class GPIO_t {
public:
constexpr PinArray(const GPIO_t& gpio, int first, int last) : g(gpio), f(first), l(last) {}
- #if defined(STM32F3) || defined(STM32F4) || defined(STM32L0)
+ #if ! defined(STM32F1)
void set_mode(Pin::Mode m) {
g.reg.MODER = (g.reg.MODER & ~mask2()) | ((0x55555555 * m) & mask2());
}
@@ -198,7 +202,14 @@ class GPIO_t {
typedef GPIO_t::Pin Pin;
typedef GPIO_t::PinArray PinArray;
-#if defined(STM32F1)
+#if defined(STM32F0)
+static GPIO_t GPIOA(0x48000000);
+static GPIO_t GPIOB(0x48000400);
+static GPIO_t GPIOC(0x48000800);
+static GPIO_t GPIOD(0x48000c00);
+static GPIO_t GPIOE(0x48001000);
+static GPIO_t GPIOF(0x48001400);
+#elif defined(STM32F1)
static GPIO_t GPIOA(0x40010800);
static GPIO_t GPIOB(0x40010c00);
static GPIO_t GPIOC(0x40011000);
diff --git a/interrupt/fault.cpp b/interrupt/fault.cpp
index 0a0410b..0d91c1d 100644
--- a/interrupt/fault.cpp
+++ b/interrupt/fault.cpp
@@ -3,7 +3,7 @@
#include <os/time.h>
inline void __attribute__((naked)) switch_context() {
- #if ! defined(STM32L0) // TODO: cortex-m0/+ unsupported for now.
+ #if ! (defined(STM32F0) || defined(STM32L0)) // TODO: cortex-m0/+ unsupported for now.
asm volatile ("cpsid i");
diff --git a/ld_scripts/stm32_f0_8.ld b/ld_scripts/stm32_f0_8.ld
new file mode 100644
index 0000000..289255c
--- /dev/null
+++ b/ld_scripts/stm32_f0_8.ld
@@ -0,0 +1,6 @@
+MEMORY {
+ flash (rx) : org = 0x08000000, len = 64k
+ ram (rwx) : org = 0x20000000, len = 8k
+}
+
+INCLUDE "arm_flash_ram.ld"
diff --git a/rcc/rcc.h b/rcc/rcc.h
index ed8905d..b355250 100644
--- a/rcc/rcc.h
+++ b/rcc/rcc.h
@@ -4,7 +4,22 @@
#include <stdint.h>
struct RCC_t {
- #if defined(STM32F1)
+ #if defined(STM32F0)
+ volatile uint32_t CR;
+ volatile uint32_t CFGR;
+ volatile uint32_t CIR;
+ volatile uint32_t APB2RSTR;
+ volatile uint32_t APB1RSTR;
+ volatile uint32_t AHBENR;
+ volatile uint32_t APB2ENR;
+ volatile uint32_t APB1ENR;
+ volatile uint32_t BDCR;
+ volatile uint32_t CSR;
+ volatile uint32_t AHBRSTR;
+ volatile uint32_t CFGR2;
+ volatile uint32_t CFGR3;
+ volatile uint32_t CR2;
+ #elif defined(STM32F1)
volatile uint32_t CR;
volatile uint32_t CFGR;
volatile uint32_t CIR;
@@ -88,7 +103,60 @@ struct RCC_t {
volatile uint32_t CSR;
#endif
- #if defined(STM32F1)
+ #if defined(STM32F0)
+ enum AHB_dev {
+ DMA1 = 1 << 0,
+ DMA2 = 1 << 1,
+ SRAM = 1 << 2,
+ FLITF = 1 << 4,
+ CRC = 1 << 6,
+ GPIOA = 1 << 17,
+ GPIOB = 1 << 18,
+ GPIOC = 1 << 19,
+ GPIOD = 1 << 20,
+ GPIOE = 1 << 21,
+ GPIOF = 1 << 22,
+ TSC = 1 << 24,
+ };
+
+ enum APB1_dev {
+ TIM2 = 1 << 0,
+ TIM3 = 1 << 1,
+ TIM6 = 1 << 4,
+ TIM7 = 1 << 5,
+ TIM14 = 1 << 8,
+ WWDG = 1 << 11,
+ SPI2 = 1 << 14,
+ USART2 = 1 << 17,
+ USART3 = 1 << 18,
+ USART4 = 1 << 19,
+ USART5 = 1 << 20,
+ I2C1 = 1 << 21,
+ I2C2 = 1 << 22,
+ USB = 1 << 23,
+ CAN = 1 << 25,
+ CRS = 1 << 27,
+ PWR = 1 << 28,
+ DAC = 1 << 29,
+ CEC = 1 << 30,
+ };
+
+ enum APB2_dev {
+ SYSCFG = 1 << 0,
+ USART6 = 1 << 5,
+ USART7 = 1 << 6,
+ USART8 = 1 << 7,
+ ADC = 1 << 9,
+ TIM1 = 1 << 11,
+ SPI1 = 1 << 12,
+ USART1 = 1 << 14,
+ TIM15 = 1 << 16,
+ TIM16 = 1 << 17,
+ TIM17 = 1 << 18,
+ DBGMCU = 1 << 22,
+ };
+
+ #elif defined(STM32F1)
enum AHB_dev {
DMA1 = 1 << 0,
DMA2 = 1 << 1,
@@ -313,7 +381,7 @@ struct RCC_t {
};
#endif
- #if defined(STM32F1) || defined(STM32F3) || defined(STM32L0)
+ #if defined(STM32F0) || defined(STM32F1) || defined(STM32F3) || defined(STM32L0)
inline void enable(AHB_dev dev) {
AHBENR |= dev;
}
@@ -344,7 +412,7 @@ struct RCC_t {
#endif
};
-#if defined(STM32F1) || defined(STM32F3) || defined(STM32L0)
+#if defined(STM32F0) || defined(STM32F1) || defined(STM32F3) || defined(STM32L0)
static RCC_t& RCC = *(RCC_t*)0x40021000;
#elif defined(STM32F4)
static RCC_t& RCC = *(RCC_t*)0x40023800;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 15:39:02 +0100